Posts filed under differential equation

“Differential Equations Made Easy (TI-89) breaks down each step which really helps you understand the problem.

The Differential Equations Made Easy program saved me from hours of wasted studying. The program breaks down each step witch really helps you understand the problem. This also guarantees your answers are correct and gives you that peace of mind in Homework and beyond. The program itself is intuitive and easy to use. I opened… (read more)

Laplace Transform Information using TI89’s Differential Equations Made Easy

To find the Laplace Transform of a piecewise defined function , select Laplace Transform in the Main Menu, next select option3 “Piecewise defined function” in the dropdown menu as shown below: Next, enter the two pieces/functions as shown below. c is the breakpoint. 2) To SOLVE a Differential Equation using LaPlace Tranforms such as y”+2y’+y=0… (read more)

Love the TI89 Physics & Differential Equations Made Easy Apps PLUS: Outstanding Customer Service

I originally found the ti89.com website by surfing the web trying to find ways to help with my physics class. After downloading my first app I loved it! Helped in so many ways especially when they do step by step. I downloaded my second app a year later taking my differential equation class. It easily… (read more)

How to enter this Bernoulli equation

Olumide Alege (@oalege87) 5/27/16, 12:00 AM @TiMathApps how do I input this bernoulli equ pic.twitter.com/6JVTR7VnRG Answer: divide both sides by X to have dy/dx +y/X = 1/x*y^2. Now you see how to enter it. p(X)=1/x and q(X)=1/x n=-2 . got it?

Solving 2. order Vibrating Spring Differential Equation using the TI89

The shown spring problem can be solved using DEQME : F2 G enter w=9.81 (to make coeff=1) g=9.81 b=0 k=64 F=0 Hit ENTER about 7 times , Variation of Parameter will be used to solve, then you may enter your initial conditions x0=0 y(x0)=2/3 y'(x0)=-4/3 Voila!!

Solve 2. and 3. order Differential Equations using TI89

Using Differential Equations Made for the TI89 we enter the 3 problems as shown below. Screenshots show how the problems were entered and the solutions. Question 2) y”-2y+5y=0   y(0)=2  y'(0)=4 go to F2 2 and enter b=-2 and c=5 , x0=0, y(x0)=2 y,(x0)=4 Question 3) y”-3y+2y=6e^(-x)    y(0)=1 y'(0)=2 . go to F2 3 and… (read more)

Solve Differential Equation using LaPlace Transform with the TI89

Lets solve y”-4y’+5y=2e^t y(0)=3 , y'(0)=1 Go to F5 1 and enter the D.Eqn as shown in the image, just press enter and see how the solution is derived , nicely laid out, step by step using Differential Equations Made Easy.

How to solve a Bernoulli Equation using Differential Equations Made Easy with the TI 89

To solve x*(dy/dx) + y = 1/y^2 there are several options to do so. F1 G : Bernoulli or F1 A : Linear in y or F1 D: N*y’+M=0 , try them all to get the same solution in different ways. To use the F1 G : Bernoulli , first rewrite x*(dy/dx) + y =… (read more)

How to solve 1. order Differential Equations using Differential Equations Made Easy with a TI89

How to solve the 1. order Diff Eqn: (3y+2t-2)dt + (10y+3t-1) dy = 0 with y(-1)=2 Just replace every t by x and enter the D.E. and initial conditions under F1 C as shown. To view more steps on how to solve an exact Diff Eqn enter it under F1 6 . Voila!!

How to solve the y’-x^2*y=2x^2 using Differential Equation Made Easy

There are 2 ways to solve this Differential Equation: 1) Since it is linear in y use F1 : Linear in y enter P=-x^2 and Q=2x^3 press Enter . Using an Integration factor will yield the answer. 2) Rewriting it as y’=2x^2+x^2*y=x^2*(2+y) shows that the method of separating the variables will work as well, That… (read more)