E-CodeTI-84 and TI-89 calculator programs
165 checked TI-84 and TI-89 programs, by subject. 130 are for the TI-84 Plus CE and 35 for the TI-89 Titanium. Each page says what the program does and how it was checked.
TI-84 Plus CE programs
All 130 TI-84 Plus CE programs, by subject
Math (TI-84 Plus CE)
- Quadratic formula solver
- Circle area and circumference
- Newton-Raphson root finder
- Bisection root finder
- Riemann sum area estimator
- Formula reference card
- Law of Cosines solver
- Numerical integration lab
- Linear system solver (n equations)
- Polynomial roots, complex included
- Newton's method with an iteration table
- ODE solver: Euler vs RK4 with a table
- Vectors: dot, cross, angle, projection
- Calculus applications: area, arc length, volume, surface
- Eigenvalues and eigenvectors (2×2, 3×3)
- Taylor polynomial: approximation and error
- Matrix toolkit: det, inverse, product, power, transpose
- LU decomposition with partial pivoting
Statistics (TI-84 Plus CE)
- Regression: linear, quadratic, exponential with r²
- Hypothesis tests: z, t, two-sample t, chi-square
- Confidence intervals: z, t, proportion, two-sample
- Binomial, Poisson and normal probabilities
- One-way ANOVA
- Chi-square test of independence
- Sample size for a margin of error
- Geometric distribution: first success
- Normal approximation to the binomial
Chemistry (TI-84 Plus CE)
- Weak acid equilibrium pH
- Ideal gas law solver
- Limiting reagent and theoretical yield
- ICE table: equilibrium concentrations
- Weak-acid titration and buffer pH
- Rate laws: zero, first and second order
- Nernst equation: cell potential and ΔG
- Combined gas law with °C or K
- Calorimetry: mixing and melting ice
- Boiling point elevation, freezing point depression
- Gas stoichiometry: grams to liters of gas
Physics (TI-84 Plus CE)
- Projectile motion solver
- Projectile with air drag (RK4)
- Slider-crank kinematics
- Oblique central impact
- Block sliding onto a spring
- Two-body orbit and Kepler's equation
- Rolling body on an incline
- Rocket in gravity (Tsiolkovsky)
- Polar-coordinate kinematics
- Kinematics: the five constant-acceleration equations
- Projectile launched from a height
- Thin lens, mirror, lensmaker and two-lens system
- Simple harmonic motion: spring or pendulum
- Doppler effect for sound
- Harmonics: string, open pipe, closed pipe
- Coulomb's law: force, field, three charges
- Circular motion: centripetal, banked curve, loop
- Gravitation: force, orbits, escape speed
- Refraction: Snell's law and total internal reflection
Engineering (TI-84 Plus CE)
- RC circuit charging transient
- Cantilever beam deflection
- Reynolds number / flow regime
- Three-loop circuit (mesh currents)
- Beam reactions and maximum moment
- Newton's law of cooling
- Polynomial roots and stability
- Tensile test analysis
- Two-link robot arm (inverse kinematics)
- Byte toolkit: binary, hex, checksum
- Engineering toolkit hub
- Pin fin with convective tip
- Transient plane wall (first term)
- 2-D steady conduction, plate series
- Stefan melting problem
- Radiation exchange, 3-surface enclosure
- Stefan tube: evaporation by diffusion
- Psychrometrics: wet-bulb and dew point
- Heat exchanger, effectiveness-NTU
- Semi-infinite solid / diffusion
- 1-DOF forced vibration
- 2-DOF vibration: modes
- Pipe friction: Colebrook, Darcy-Weisbach
- Pipe network: series + parallel
- Venturi meter and Pitot tube
- Open channel: Manning, critical depth
- Hydraulic jump
- Pump and system operating point
- Terminal settling velocity of a sphere
- Flat-plate boundary layer and drag
- Isentropic flow and normal shock
- Converging nozzle: choking and thrust
- Potential flow past a spinning cylinder
- Hydrostatic force on a gate
- Impeller velocity triangles (Euler head)
- Air-standard Otto, Diesel, Brayton
- Polytropic process, ideal gas
- Real gas: van der Waals, Redlich-Kwong
- Entropy generation, lost work
- Chemical equilibrium: N2O4 <-> 2NO2
- Radioactive decay chain (Bateman)
- Four-factor formula and criticality
- Point reactor kinetics, step reactivity
- Gamma shielding and dose geometry
- Uranium enrichment: SWU and feed
- Neutron moderation: xi and collisions
- Reactor decay heat after shutdown
- Neutron diffusion: critical size, flux
- RC, RL and RLC transient response
- Series-parallel resistor network reducer
- Pinch analysis: minimum hot and cold utility
- Two-phase flow pressure drop
- Beam deflection by superposition
- Column buckling: Euler and Johnson
- Bode point and stability margins
- Second-order step response metrics
- Discrete PID step response
- Gamma shielding with Taylor buildup
- AC circuit: series or parallel RLC phasors
- Op-amp stages: gain and output
- Mohr's circle: stress transformation
- Thevenin equivalent and maximum power
Finance (TI-84 Plus CE)
- Compound interest calculator
- Loan amortization with extra payments
- Time value of money solver (N, I%, PV, PMT, FV)
- NPV, IRR, MIRR and payback
- Compare two loans (APR with fees)
- Depreciation schedule: SL, 200% DB, SYD
Tools (TI-84 Plus CE)
- Arrow-key counter
- Caesar cipher encoder
- Bubble sort a list
- Decimal to binary converter
- Unit converter: length, mass, volume, pressure, energy, power, temperature
TI-89 Titanium programs
All 35 TI-89 Titanium programs, by subject
Math (TI-89 Titanium)
- Quadratic roots, exact when possible
- Linear system, exact answers
- Fraction calculator: exact, mixed, decimal
- Prime factorization and divisors
- LU decomposition with pivoting (exact)
- Matrix inverse, exact
- Newton's method on a typed function
- Trapezoid and Simpson vs nInt
- ODE: Euler vs RK4 table
- Series partial sums, exact
- Matrix inverse from a typed matrix
- LU decomposition of a typed matrix
- Linear system Ax = b from a typed matrix
- Cramer's rule with every determinant
Statistics (TI-89 Titanium)
- One-variable statistics of a list
- Linear regression with exact slope
- One-sample z test and interval (dialog)
- t test and interval from data lists
- Chi-square goodness of fit
- Binomial (exact), Poisson and normal probabilities
- Least-squares polynomial fit (exact)
- Least squares with matrices (Vandermonde)
- Markov chain: n steps and the steady state
Chemistry (TI-89 Titanium)
- Titration curve: pH for a list of volumes
- Ideal gas PV=nRT: leave one blank
- Limiting reagent for any number of reactants
- Molar mass from a chemical formula
Physics (TI-89 Titanium)
Engineering (TI-89 Titanium)
Finance (TI-89 Titanium)
Tools (TI-89 Titanium)
How they are checked
How E-Code checks every program · Put a program on your calculator