Scrawl AI

Every Subject Scrawl AI Supports

Scrawl AI handles every subject from freshman math through graduate-level engineering. Over 50 subjects across 7 departments, all rendered in realistic handwriting with hand-drawn diagrams.

Mathematics

Handwritten calculus solution by Scrawl AI

Calculus I (Limits, Derivatives)

Limits, continuity, derivatives, and applications. Every step rendered in realistic handwriting with proper notation for limit expressions, derivative rules, and optimization problems.

  • Limits and continuity
  • Definition of the derivative
  • Chain rule, product rule, quotient rule
  • Related rates
  • Optimization problems
  • Mean Value Theorem

Calculus II (Integration, Series)

Integration techniques, infinite series, and convergence tests. Scrawl renders u-substitution chains, integration by parts, Taylor series, and convergence test work step by step.

  • U-substitution and integration by parts
  • Partial fractions
  • Improper integrals
  • Taylor and Maclaurin series
  • Convergence tests (ratio, root, comparison)
  • Arc length and surface area

Calculus III / Multivariable Calculus

Partial derivatives, multiple integrals, and vector calculus. Double and triple integrals, gradient, divergence, curl, and line integrals all rendered with proper notation.

  • Partial derivatives and gradients
  • Double and triple integrals
  • Line integrals and surface integrals
  • Green's, Stokes', and Divergence theorems
  • Lagrange multipliers
  • Parametric surfaces

Differential Equations (ODEs, PDEs, Laplace Transforms)

First-order, second-order, and systems of ODEs. Laplace transforms, Fourier series, and partial differential equations. Every solution technique shown in handwriting.

  • Separable and exact equations
  • Linear second-order ODEs
  • Laplace transforms
  • Systems of differential equations
  • Fourier series
  • Partial differential equations
Handwritten eigenvalue solution by Scrawl AI

Linear Algebra (Matrices, Eigenvalues, Vector Spaces)

Matrix operations, determinants, eigenvalues, eigenvectors, and abstract vector spaces. Row reduction and matrix factorizations rendered step by step.

  • Row reduction and echelon forms
  • Determinants and inverses
  • Eigenvalues and eigenvectors
  • Diagonalization
  • Singular value decomposition
  • Vector spaces and subspaces

Discrete Mathematics (Combinatorics, Graph Theory, Proofs)

Combinatorics, graph theory, and proof techniques. Induction proofs, counting arguments, and graph algorithms rendered with proper logical notation.

  • Combinatorics and counting
  • Graph theory (paths, cycles, trees)
  • Proof by induction
  • Proof by contradiction
  • Set theory and relations
  • Recurrence relations

Real Analysis (Epsilon-Delta, Convergence)

Rigorous proofs of limits, continuity, and convergence. Epsilon-delta arguments, sequences of functions, and metric space topology rendered in handwriting.

  • Epsilon-delta proofs
  • Sequences and series of functions
  • Uniform convergence
  • Compactness and connectedness
  • Measure theory basics
  • Riemann and Lebesgue integration

Abstract Algebra (Groups, Rings, Fields)

Group theory, ring theory, and field extensions. Scrawl renders Cayley tables, homomorphism diagrams, and algebraic structure proofs in handwriting.

  • Groups, subgroups, cosets
  • Isomorphisms and homomorphisms
  • Ring theory and ideals
  • Field extensions
  • Galois theory
  • Polynomial rings

Number Theory

Divisibility, primes, modular arithmetic, and cryptographic foundations. Every proof and computation rendered step by step in handwriting.

  • Divisibility and GCD
  • Primes and factorization
  • Modular arithmetic
  • Euler's theorem and Fermat's little theorem
  • Quadratic residues
  • Continued fractions

Probability Theory

Axioms of probability, random variables, distributions, and stochastic processes. Conditional probability, Bayes theorem, and expectation calculations in handwriting.

  • Combinatorial probability
  • Conditional probability and Bayes theorem
  • Discrete and continuous distributions
  • Moment generating functions
  • Central Limit Theorem
  • Markov chains

Statistics (Hypothesis Testing, Regression, ANOVA)

Hypothesis testing, confidence intervals, regression, and ANOVA. Every test statistic calculation and p-value determination shown step by step.

  • Hypothesis testing (z, t, chi-square)
  • Confidence intervals
  • Linear and multiple regression
  • ANOVA (one-way and two-way)
  • Bayesian inference
  • Nonparametric tests

Numerical Methods

Root-finding, interpolation, numerical integration, and ODE solvers. Iterative algorithms and error analysis rendered with full computation tables.

  • Newton's method and bisection
  • Lagrange and Newton interpolation
  • Numerical integration (trapezoidal, Simpson's)
  • Gaussian elimination with pivoting
  • Runge-Kutta methods
  • Error analysis and convergence

Try any mathematics subject at scrawlai.app or download for iOS.

Physics

Handwritten mechanics solution with free body diagram by Scrawl AI

Classical Mechanics (Newton's Laws, Energy, Momentum)

Kinematics, dynamics, energy, and momentum. Free body diagrams drawn by hand with labeled force vectors integrated into the handwritten solution.

  • Kinematics (1D and 2D)
  • Newton's laws and free body diagrams
  • Work, energy, and power
  • Conservation of momentum
  • Rotational dynamics
  • Gravitation

Electromagnetism (Gauss's Law, Ampere's Law, Maxwell's Equations)

Electric and magnetic fields, Gauss's law, Ampere's law, Faraday's law, and Maxwell's equations. Vector field diagrams and integral computations in handwriting.

  • Coulomb's law and electric fields
  • Gauss's law
  • Ampere's law and Biot-Savart
  • Faraday's law of induction
  • Maxwell's equations
  • Electromagnetic waves

Thermodynamics (PV Diagrams, Heat Engines, Entropy)

Laws of thermodynamics, heat engines, entropy, and statistical mechanics. PV diagrams drawn by hand with process labels and work calculations.

  • Ideal gas law and kinetic theory
  • First and second laws
  • PV diagrams and work calculations
  • Carnot and other heat engines
  • Entropy and free energy
  • Phase transitions

Quantum Mechanics (Schrodinger Equation, Wave Functions)

Wave-particle duality, the Schrodinger equation, and quantum operators. Bra-ket notation, commutators, and eigenvalue problems in handwriting.

  • Wave-particle duality
  • Schrodinger equation (time-dependent and independent)
  • Operators and observables
  • Hydrogen atom
  • Angular momentum and spin
  • Perturbation theory

Optics (Reflection, Refraction, Diffraction)

Geometric and physical optics. Ray diagrams, Snell's law, interference, and diffraction patterns rendered in handwriting.

  • Reflection and refraction
  • Snell's law and total internal reflection
  • Thin lens and mirror equations
  • Interference (Young's double slit)
  • Diffraction gratings
  • Polarization

Wave Mechanics

Mechanical waves, sound, standing waves, and resonance. Wave equations and superposition solutions rendered with proper notation.

  • Wave equation and solutions
  • Superposition and interference
  • Standing waves and harmonics
  • Doppler effect
  • Sound waves and intensity
  • Resonance

Fluid Mechanics

Fluid statics and dynamics. Bernoulli's equation, viscous flow, and pressure calculations shown step by step in handwriting.

  • Fluid statics and pressure
  • Archimedes' principle
  • Bernoulli's equation
  • Continuity equation
  • Viscous flow and Reynolds number
  • Navier-Stokes basics

Special Relativity

Lorentz transformations, time dilation, length contraction, and relativistic dynamics. Spacetime diagrams and four-vector notation in handwriting.

  • Lorentz transformations
  • Time dilation and length contraction
  • Relativistic momentum and energy
  • Spacetime diagrams
  • Mass-energy equivalence
  • Four-vectors

Try any physics subject at scrawlai.app or download for iOS.

Engineering

Hand-drawn circuit diagram rendered by Scrawl AI

Circuit Analysis (DC, AC, Op-Amps)

DC and AC circuit analysis with hand-drawn schematics. Resistors, capacitors, inductors, op-amps, and transistors drawn in the solution with full node/mesh analysis.

  • KVL, KCL, mesh and nodal analysis
  • Thevenin and Norton equivalents
  • AC phasor domain analysis
  • Op-amp circuits
  • RLC transients and filters
  • Bode plots and frequency response

Digital Logic (Truth Tables, Boolean Algebra, Karnaugh Maps)

Combinational and sequential logic design. Truth tables, Boolean algebra simplification, Karnaugh maps, and state machine diagrams in handwriting.

  • Boolean algebra and logic gates
  • Truth tables and canonical forms
  • Karnaugh map simplification
  • Combinational circuit design
  • Flip-flops and latches
  • Finite state machines

Signal Processing (Fourier Transforms, Filters)

Continuous and discrete signal analysis. Fourier transforms, convolution, filter design, and Z-transforms rendered in handwriting with proper notation.

  • Fourier series and transforms
  • Discrete Fourier Transform (DFT)
  • Convolution and correlation
  • Filter design (FIR, IIR)
  • Z-transforms
  • Sampling and aliasing

Control Systems (Transfer Functions, Bode Plots, Root Locus)

Feedback control systems analysis and design. Transfer functions, Bode plots, root locus diagrams, and Nyquist plots rendered in handwriting.

  • Transfer functions and block diagrams
  • Bode plots and gain/phase margins
  • Root locus analysis
  • Nyquist stability criterion
  • PID controller design
  • State-space representation

Statics and Dynamics

Force equilibrium, trusses, frames, and rigid body dynamics. Free body diagrams and moment calculations rendered step by step in handwriting.

  • Force and moment equilibrium
  • Trusses and frames
  • Centroids and moments of inertia
  • Particle and rigid body dynamics
  • Virtual work
  • Vibrations and natural frequency

Strength of Materials (Stress, Strain, Beam Deflection)

Stress analysis, strain, and beam theory. Mohr's circle, shear/moment diagrams, and beam deflection calculations in handwriting.

  • Axial stress and strain
  • Shear and bending moment diagrams
  • Beam deflection (Euler-Bernoulli)
  • Mohr's circle
  • Column buckling
  • Combined loading

Thermodynamics (Engineering)

Engineering thermodynamics with steam tables, Rankine cycles, and refrigeration. Process diagrams and energy balance calculations in handwriting.

  • Open and closed system analysis
  • Steam tables and property lookups
  • Rankine and Brayton cycles
  • Refrigeration cycles
  • Psychrometrics
  • Combustion analysis

Fluid Dynamics

Pipe flow, boundary layers, and compressible flow. Moody diagram analysis and dimensional analysis rendered in handwriting.

  • Pipe flow and head loss
  • Moody diagram and friction factor
  • Dimensional analysis (Buckingham Pi)
  • Boundary layer theory
  • Compressible flow
  • Turbomachinery basics

Try any engineering subject at scrawlai.app or download for iOS.

Chemistry

Handwritten stoichiometry solution by Scrawl AI

General Chemistry (Stoichiometry, Equilibrium)

Stoichiometry, equilibrium, and reaction balancing. ICE tables, molar mass calculations, and redox balancing all rendered in realistic handwriting.

  • Stoichiometry and molar masses
  • Limiting reagents and percent yield
  • Chemical equilibrium and ICE tables
  • Redox balancing
  • Acid-base reactions and pH
  • Thermochemistry and Hess's law

Organic Chemistry (Mechanisms, Synthesis, Stereochemistry)

Reaction mechanisms, retrosynthesis, and stereochemistry. Arrow-pushing mechanisms and structural formulas rendered in handwriting.

  • Reaction mechanisms (SN1, SN2, E1, E2)
  • Functional group transformations
  • Retrosynthetic analysis
  • Stereochemistry (R/S, E/Z)
  • Aromatic chemistry
  • Spectroscopy interpretation (NMR, IR, MS)

Physical Chemistry (Thermodynamics, Kinetics)

Chemical thermodynamics, kinetics, and quantum chemistry. Partition functions, rate laws, and molecular orbital theory in handwriting.

  • Chemical thermodynamics
  • Reaction kinetics and rate laws
  • Statistical thermodynamics
  • Quantum chemistry basics
  • Molecular orbital theory
  • Electrochemistry and Nernst equation

Analytical Chemistry

Quantitative analysis, titrations, and instrumental methods. Calibration curves and error analysis calculations in handwriting.

  • Titrations (acid-base, redox, complexometric)
  • Gravimetric analysis
  • Spectrophotometry and Beer's law
  • Chromatography theory
  • Error analysis and statistics
  • Calibration curves

Biochemistry

Enzyme kinetics, metabolic pathways, and molecular biology calculations. Michaelis-Menten plots and energetics in handwriting.

  • Enzyme kinetics (Michaelis-Menten)
  • Metabolic pathways (glycolysis, TCA)
  • Protein structure and folding
  • DNA replication and transcription
  • Bioenergetics and ATP
  • Lipid and carbohydrate metabolism

Inorganic Chemistry

Coordination chemistry, crystal field theory, and organometallics. Ligand field diagrams and symmetry analysis in handwriting.

  • Coordination compounds and nomenclature
  • Crystal field theory
  • Molecular orbital theory for inorganics
  • Organometallic chemistry
  • Symmetry and group theory
  • Bioinorganic chemistry

Try any chemistry subject at scrawlai.app or download for iOS.

Computer Science

Handwritten pseudocode solution by Scrawl AI

Data Structures and Algorithms

Sorting, searching, graph algorithms, and dynamic programming. Pseudocode rendered in monospace handwriting with Big-O analysis shown step by step.

  • Sorting (merge, quick, heap)
  • Graph traversal (BFS, DFS)
  • Dynamic programming
  • Greedy algorithms
  • Hash tables and trees
  • Big-O analysis

Discrete Math for CS

Logic, proofs, counting, and graph theory as applied to computer science. Proof techniques and recurrences in handwriting.

  • Propositional and predicate logic
  • Proof techniques (induction, contradiction)
  • Counting and combinatorics
  • Graph theory for CS
  • Recurrence relations
  • Formal languages introduction

Theory of Computation (Automata, Turing Machines)

Finite automata, context-free grammars, and Turing machines. State diagrams and formal language proofs rendered in handwriting.

  • DFA and NFA construction
  • Regular expressions and languages
  • Context-free grammars and PDAs
  • Turing machines
  • Decidability and reducibility
  • Chomsky hierarchy

Operating Systems

Process scheduling, memory management, and synchronization. Algorithm walkthroughs and timing diagrams in handwriting.

  • Process scheduling algorithms
  • Memory management (paging, segmentation)
  • Deadlock detection and prevention
  • File system design
  • Synchronization (mutexes, semaphores)
  • Virtual memory and page replacement

Computer Networks

Network protocols, routing algorithms, and the OSI model. Protocol analysis and subnet calculations in handwriting.

  • OSI and TCP/IP models
  • Routing algorithms (Dijkstra, Bellman-Ford)
  • TCP flow and congestion control
  • Subnetting and CIDR
  • DNS and HTTP protocols
  • Network security basics

Database Systems

Relational algebra, SQL query optimization, and normalization. ER diagrams and dependency analysis in handwriting.

  • Relational algebra and calculus
  • SQL query writing
  • Normalization (1NF through BCNF)
  • ER diagrams
  • Transaction processing and ACID
  • Indexing and query optimization

Machine Learning (Math-heavy problems)

Gradient descent, loss functions, backpropagation, and statistical learning theory. Matrix calculus and optimization in handwriting.

  • Linear and logistic regression
  • Gradient descent and optimization
  • Neural network backpropagation
  • SVMs and kernel methods
  • Decision trees and ensemble methods
  • Bias-variance tradeoff

Complexity Theory (Big-O, NP-Completeness)

Asymptotic analysis, complexity classes, and reductions. NP-completeness proofs and reduction diagrams in handwriting.

  • Asymptotic notation (Big-O, Omega, Theta)
  • P vs NP
  • NP-completeness and reductions
  • Approximation algorithms
  • Space complexity
  • Amortized analysis

Try any computer science subject at scrawlai.app or download for iOS.

Humanities

Handwritten AP History DBQ essay by Scrawl AI

AP US History (DBQs, Essays)

Document-based questions, long essay questions, and short answer responses. Thesis statements, evidence, and analysis rendered in natural handwriting across multiple pages.

  • DBQ essay structure
  • Thesis development
  • Document analysis and sourcing
  • Contextualization
  • Multi-paragraph arguments
  • AP exam formatting

AP European History

European history from the Renaissance to the present. DBQs, LEQs, and SAQs rendered in handwriting with proper historical argumentation.

  • Renaissance and Reformation
  • Enlightenment and revolutions
  • Industrialization and imperialism
  • World Wars and Cold War
  • European integration
  • DBQ and LEQ writing

AP World History

Global history from 1200 CE to the present. Cross-cultural comparisons, causation arguments, and document analysis in handwriting.

  • Global trade networks
  • Empire building and expansion
  • Industrialization across regions
  • Decolonization and independence
  • Globalization
  • Comparative and causation essays

Political Science (Essays, Analysis)

Political theory, comparative politics, and international relations essays. Argumentative structure and evidence-based analysis in handwriting.

  • Political theory and philosophy
  • Comparative government systems
  • International relations theory
  • Public policy analysis
  • Constitutional law
  • Political economy

Philosophy (Logic, Arguments)

Formal logic, ethical theory, and philosophical argumentation. Logical proofs, truth tables, and argumentative essays in handwriting.

  • Formal and informal logic
  • Truth tables and valid arguments
  • Ethical theory (deontology, utilitarianism, virtue)
  • Epistemology
  • Metaphysics
  • Philosophy of mind

Economics (Micro and Macro, with graphs)

Supply and demand, market structures, GDP, and monetary policy. Hand-drawn economic graphs with labeled curves and equilibrium points.

  • Supply and demand analysis
  • Market structures (perfect competition, monopoly)
  • Consumer and producer surplus
  • GDP and national income accounting
  • Monetary and fiscal policy
  • International trade and exchange rates

Psychology (Statistics-based problems)

Research methods, statistical analysis, and experimental design for psychology courses. Statistical tests and data interpretation in handwriting.

  • Research methods and experimental design
  • Descriptive and inferential statistics
  • ANOVA and regression for psychology
  • Effect sizes and power analysis
  • APA-format results sections
  • Psychometrics and reliability

Sociology

Social theory, research methods, and analytical essays. Sociological analysis and theoretical frameworks rendered in handwriting.

  • Classical social theory
  • Research methodology
  • Social stratification
  • Institutions and organizations
  • Deviance and social control
  • Analytical essay writing

Try any humanities subject at scrawlai.app or download for iOS.

Business

Accounting (Financial Statements, Journal Entries)

Journal entries, T-accounts, financial statements, and ratio analysis. Debits, credits, and trial balances rendered in neat handwriting.

  • Journal entries and T-accounts
  • Trial balance and adjusting entries
  • Income statement and balance sheet
  • Cash flow statement
  • Financial ratio analysis
  • Cost accounting and variance analysis

Finance (Time Value of Money, NPV, IRR)

Time value of money, capital budgeting, and portfolio theory. NPV, IRR, and WACC calculations shown step by step in handwriting.

  • Present and future value calculations
  • NPV and IRR analysis
  • Bond and stock valuation
  • CAPM and portfolio theory
  • WACC and capital structure
  • Financial statement analysis

Business Statistics

Statistical methods for business decisions. Hypothesis testing, regression, and forecasting applied to business problems, rendered in handwriting.

  • Descriptive statistics for business
  • Probability distributions
  • Hypothesis testing for business decisions
  • Regression and forecasting
  • Quality control (control charts)
  • Decision analysis

Operations Research (Linear Programming)

Linear programming, network optimization, and decision models. Simplex method tables and graphical solutions rendered in handwriting.

  • Linear programming (graphical and simplex)
  • Transportation and assignment problems
  • Network flow optimization
  • Integer programming
  • Queuing theory
  • Inventory models

Try any business subject at scrawlai.app or download for iOS.

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