Step by Step Discrete & Finite Math app for the Ti-Nspire CAS CX


Overview and Examples at

The most comprehensive Discrete Math APP for calculators.

Step by Step……

  • Linear Programming
  • Marginal Analysis, Demand Analysis
  • Markoff Chains
  • Simplex Algorithm
  • Probabilities
  • Combinatorics
  • Functions
  • Vector and Matrices
  • Solve Equations
  • Logic with Set Theory, Truth Tables
  • Easy to use. Just plug in the equation and the correct answer shows.

Step by Step Linear Algebra app for the Ti-Nspire CAS CX


Overview and Examples :

Perform 30+ Matrix Computations such as A+B, A-B, k*A, A*B, B*A, A-1, det(A), Eigenvalues, LU and QR – Factorization, Norm, Trace.

  • Step by Step – Simplex Algorithm.
  • Step by Step – Gaussian Elimination.
  • Step by Step – Find Inverse
  • Step by Step – Find Determinant
  • Step by Step – Row Echelon and Reversal (REF and RREF)
  • Step by Step – Gauss and Gauss Jordan Elimination
  • Step by Step – Cramer Rule
  • Step by Step – EigenValues and EigenVectors.
  • Step by Step – Square Root Matrix
  • Solve any n by n system of equations.
  • Rotation Matrices, Magic Squares and much more.
  • Step by Step – Solve AX=B
  • Step by Step – OrthoNormal Basis
  • Step by Step – Range, Kernel
  • Nullity, Null-, Row- and ColumnSpace Basis.
  • Cross and Dot Product, UnitVector, Angle between Vectors
  • Projection A onto B, Distance A to B, etc …

Step by Step Business Calculus app for the Ti-Nspire CAS CX

Business Calculus contains the same modules as Calculus Made Easy and also contains stepwise solutions to Business Calculus topics such as maximum revenue/profit, marginal analysis, demand analysis, supply analysis, economic order quantity, price elasticity, consumer surplus, and more.


Watch Biz Calculus homework done on the TINspire at



Step by Step Trigonometry app for the Ti-Nspire CX available now


Watch this Youtube Video at

STEP BY STEP – Solve any 90oand non 90o Triangle.Just enter 2 sides and an angle, 3 sides or 1 side and 2 angles to view each step until triangle is solved.

  • This app is intelligent enough to automatically apply the Law of Sine or the Law of Cosine and other basic Triangle Rules to solve any triangle STEP by STEP.
  • It even notifies if triangle cannot be solved or solutions are ambiguous.
  • Read the Trig-Theorems and Identities.
  • Evaluate Trig Functions and set up Trig-Models.
  • Master the Unit-Circle and its Coordinates.
  • Compute Sectors and Arcs.
  • Convert Degree to Radian and vice versa.
  • STEP BY STEP – Given Sin Cos or Tan find the remaining ratios in a 90 degree triangle.
  • Right Triangle Checker: Check For Right Angle given 3 points
  • Trig Identity Checker
  • Convert Degrees(decimals) to Degrees, Minutes, Seconds
  • Convert Cartesian Coordinates to Polar Coordinates and vice versa.

Watch how to use the app when doing Trig homework at http://<iframe width=”460″ height=”335″ src=”″ frameborder=”0″ allowfullscreen></iframe>

Step by Step Statistics app for the Ti-Nspire CX available now


Watch this Youtube Video for an overview and examples at

Shows Step by Step solutions for most Statistics and Probability topics.

  • Step by Step Confidence Intervals for mean, proportion, 2 means, 2 proportions, variance, slope, etc.
  • Compute Sample Sizes for Confidence Intervals.
  • Step by Step Tests of Significance (Z-Tests, T-Tests, ChiSquare Goodness of Fit and Independence tests, 2-sample T tests, 2 proportion Z tests, for Variance, etc)
  • Step by Step Regression.
  • Read about how Confidence Intervals behave.
  • Read about Significant Tests: Type 1 Error, Type 2 Error, Power of a Test.
  • Much easier handling than other Statistics packages: Choose to enter Data or Statistic values. Select Significant/Confidence Levels easily.
  • Distributions: compute probabilities, etc.
  • Includes Binomial, Geometric, Normal, Student-t, Exponential, Poisson, Multinomial, Hypergeometric, F-, Chi-Square and more Distributions.
  • Probability Checker for independent events, disjoint events. Also solves P(A or B)=P(A)+P(B)-P(A and B) for the unknown.
  • Regressions: Linear , Quadratic, Cubic, Quartic, Sinusoidal, Logarithmic, Exponential, Power, MedMed
  • Step by Step Derive the Coefficients for a Linear Regression Line, the Coefficient of Determination and the Correlation Coefficient.
  • Also: Z-score Solver, Random Number Generator, etc
  • 1 or 2 variable stats on mean, mode, median, standard deviation, variance, range

Step by Step Algebra app for the Ti-Nspire – Watch this Video at

Step by Step Algebra App for the Ti-NSpire at It covers the ENTIRE Algebra curriculum: Algebra, Functions and their Analysis, Trig, Geometry, Complex Numbers, Matrices, Exponential/Logarithmic Functions, Probabilities, Combinatorics, Sequences, Induction, Sigma Notation, etc

  • Step by Step – Complete the Square
  • Step by Step – Partial Fractions
  • Step by Step – Complex Numbers
  • Step by Step – Powers
  • Step by Step – Roots
  • Step by Step – Synthetic Division
  • Step by Step – Radicals
  • Logarithm and Exponential Solver
  • Rewrite Logarithms into their Exponential Form and back: log_b(y)=x <–> y=b^x
  • Expand and Condense Logarithms Step by Step
  • Rule of 72, Change of Logarithm base
  • Effective Interest rates
  • Euler Number as Limit Definition.
  • Money Growth Solver

Step by Step Differential Equations app for the Ti-Spire – Watch this Video at

Great News: Step by step Differential Equations App for the TiNspire is now available for download at . It includes:

  • Step by Step Linear Diff Eqn
  • Step by Step Variation of Parameter
  • Step by Step Linear Undetermined Coefficients
  • Step by Step Separation of Variables
  • Step by Step Exact and Non-Exact Diff Eqns
  • Step by Step Laplace Transforms
  • Step by Step Wronskian
  • Step by Step Cauchy Euler Diff Eqns
  • Step by Step Numerical Solutions : Euler, Runge Kutta
  • Step by Step Homogeneous Diff Eqns. and Characteristic Polynomial
  • Step by Step Eigenvalues and Eigenvectors
  • Step by Step Logistic Growth Diff. Equation
  • and much more.


Step by Step Chemistry app now available for the TI-Nspire CX CAS

TI-Nspire users:

Step by Step Chemistry problems involving

Period Table of Elements,

Equation Balancing,


Theoretical and %-Yield

Limiting Reagent

Hess Law

Molecule Mass Analysis

Gas Laws,

Moles, Mass, Density, Volume, Weight etc

Free trials.