# Differential Equations TI89 App with Step by Step Solutions

## Solve Differential Equations questions stepwise using the TI89 Calculator -- CALCULUS MADE EASY -- Step by Step Integration Step by Step Differentiation Step by Step Limits (L'Hopital Rule) Step by Step Differential Equations Step by Step Interval of Convergence Step by Step Implicit Differentiation Step by Step Implicit Diff. (2. Derivative) Step by Step Area Approximation Step by Step Partial Fractions Step by Step Logarithmic Differentiation Step by Step Inverse Slope Step by Step Trig Substitution Step by Step Synthetic Division Step by Step Volume (by Revolution) Step by Step Composition of Functions Step by Step Parametric Equations Step by Step Parametric Equations (2) Step by Step Polar Equations Signcharts for f, f' and f" All-in-one Function Explorer Auto Domain Finder Auto Series Convergence Tester Auto Sequence Convergence Tester Rate Analysis Continuity & Differentiability Checker Graph 3D - Solid of Revolution Analytic Geometry - Parameter to Normalform Analytic Geometry - Find Parameterform Analytic Geometry - Tangent&Normalvector -- MATRIX MADE EASY -- Step by Step - Find Inverse Step by Step - Find Determinant Step by Step - Row-Echelon Step by Step - Reverse Row-Echelon Step by Step - Cramers Rule Step by Step - Solve 2x2 (nxn) System Step by Step - Simplex Algorithm Step by Step - EigenValue&EigenVector Step by Step - Determine Nullity DIFFERENTIAL EQUATIONS MADE EASY Step by Step - Solve Separable DEQ. Step by Step - Solve 2. Order DEQ. Step by Step - Variation of Parameter Step by Step - Undetermined Coefficients Draw Phase Line + Analyze Solve M(x,y)dy+N(x,y)dx=0 Step by Step - System of Equations Step by Step - Solve DEQ using Laplace Laplace&Inverse Transform --TRIGONOMETRY MADE EASY-- Step by Step - Auto Triangle Solver(SAS) Step by Step - Auto Triangle Solver (SAA) Step by Step - Triangle Solver (SSS) View Trig Identities and Formulas View the UnitCircle Coordinates. Convert Degrees to Radian. Graph Trig Functions. Evaluate Trig Functions. -- PRECALCULUS MADE EASY -- Equation(s) Solver Find Domain Step by Step - Synthetic Division Solve any Triangle Compute Matrices Find Tangent Lines Exponential Functions Solver Find Numbers in Sequences --ACCOUNTING BUSINESS MADE EASY-- Statistics & Forecasting Compute Ratios QuickAcid Test Compute Percentages Create Amortization Schedule Compute Loans Loan Solver -- CONICS MADE EASY -- Step by Step - Conic Analysis Step by Step - Conic Analysis(2) Step by Step - Complete the Square View Conics Information Rotation of Axis View Rotation Equations Conic Analysis - Polar Eqn -- NUMBER THEORY MADE EASY -- Find Primes or Coprimes Step by Step Euclidean Algorithm Create Mod Tables Perform RSA Encryption Perform Chinese Remainder Theorem Find Primitive Roots Solve Congruences Solve Quadratic Congruences Perform Fermat's Little Theorem Perform Goldbach Conjecture -- ALGEBRA MADE EASY -- Step by Step - Find GCD Step by Step - Compute Powers Step by Step - Complex Numbers View Fundamental Laws All-in-1 Function Explorer Distance, Midpoint, Slope of 2 Points Find Domain of any Function Exponential, Log Functions Factoring and Distributing Geometry: Circles, etc Matrix and Vector Computations Combinations, Permutations, Pascal Triangle Step by Step - Partial Fractions Probabilities Sequences: Arithmetic, Geometric .. Simplify Algebraic Expressions Solve Equalities, Inequalities Solve System of Equations Trig: Solve any Triangle View Trig Identities Trig: View UnitCircle Scroll down to select APP and observe the provided Step by Step solutions to the right. It is worldwide the only Math software that can do this!!! Click to view the Differentiation and Integration slides at your speed.  Follow @timathapps  Solve any Differential Equations Problem instantly.

 The most comprehensive Differential Equations APP for calculators. Users have boosted their Differential Equations knowledge. First, Second and higher order Differential Equations. Shows step by step solutions for some Differential Equations such as separable, exact, .. Includes Slope Fields, Euler method, Runge Kutta, Wronskian, LaPlace transform, system of Differential Equations, Bernoulli DE, (non) homogeneous linear systems with constant coefficient, Exact DE, shows Integrating Factors, Separable DE and much more.    Draw Phase Lines.    Ideal for quick review and homework check in Differential Equation/Calculus classes. Easy to use. Just plug in the equation and the correct answer shows. Read about the most important Partial Differential Equations. We don't solve them here. (Future project.) Step by Step - Bernoulli Differential Equation Step by Step - Exact Differential Equation Step by Step - Non-Exact DE with Integrating Factor Step by Step - Homogeneous 1. Order Differential Equation Step by Step - Initial Value Problem Solver for 2. Order Differential Equations with non matching independent variables (Ex: y'(0)=0, y(1)=0 )  Step by Step - Inverse LaPlace for Partial Fractions and linear numerators. Step by Step - LaPlace Transform (Partial Fractions, Piecewise, etc) Step by Step - Eigenvalue and Eigenvectors.  Step by Step - Variation of Parameter (for 1. and 2. order Diff. Eqn's) Step by Step - Method of Undetermined Coefficients Step by Step - Wronskian to check Independence of Functions Step by Step - Wronskian to find Coefficients  Step by Step - Cauchy-Euler D.E. of order 2 and 3. Step by Step - Riccati Equation Step by Step - Differential Equation Linear in x or in y (even using VOP).  Step by Step - Linear Fractions Clairaut, Lagrange (d'Alembert) and Linear Fraction Differential Equations Solve the "Salt in the Tank" type Differential Equation problems. Solve any Rate problem.   Solve RL-Circuits Orthogonal Trajectories Discrete Fourier Transform (DFT, FFT) Perform the Convolution of two Functions Compute the Infinite Binomial Series or perform the Binomial Theorem Vibrating Springs and solve RCL Circuits DOWNLOAD HERE Read the DEQME User Guide Read: Read a SUMMARY(pdf file) of all Functionality under F1 and F2 with many examples and screenshots and a comparison with other CAS products.   Documentation User C. F.: "The additions such as step by step exact DE, step by step homogeneous and step by step bernoulli are fantastic and would definitely make differential equations made easy an excellent study tool for anyone. Or it can be used as a quick solver to check steps. I think it's the best software of it's kind."User A.M.: I just have to give it to you guys for the great job you are doing. I was using the salt in tank program and it works flawlessly, its beyond everything I expected. Thanks again User J. P.: I highly recommend DME, it is unlike anything else out there. The ability to solve nearly any first and second order differential equation makes almost as powerful as a computer. Great for solving HW problems and the step-by-step function helped me to find my mistakes, which makes it better than a computer!  I love the phase line tool and the step-by-step Inverse LaPlace function.  It is a great learning tool. – modem designer

Sample Capabilities:

Basics of DiffEqns:
Look up facts of DiffEqns, here Homogeneous DiffEqns. Step by Step DiffEqns:
Here view separable Diff Eqns. View Slope Fields. Perform the Runge Kutta Method. Perform the Method of Undetermined Coefficients - Step by Step. Draw a Phase Line and analyze. Solve Diff Eqns of the Format
M(x,y)dx + N(x,y)dy=0 . Solve 2. order Diff Eqns:
Here, solve a homogeneous one. Solve higher order Diff Eqns:
Here, solve a linear one with constant coefficients. Perform LaPlace Transforms. View the Wronskian. Step by Step Bernoulli Step by Step Exact D. E. Step by Step 1. Order Homogeneous D.E. Wronskian to find Coefficients   