Thank you. I had been hesitating to make the purchase as I had wanted to get the apps for TI Voyage 200; but I decided to get the ones for TI-Nspire CAS CX instead, basically because it has more memory available. These apps you sell have the potential to become addictive so I most likely will be back for more! I think I made the right choice. So, needless to say, I am very impressed. Beauty is in the eye of the beholder. Your programs are my drug of choice. I am sure to enjoy them for the remainder of my life. They are one of the few things worth buying besides food and a good pair of boots.

## Thank you very much! All set and working…..Great Customer Support!!!!!

Thank you very much! Chemistry Made easy for NSpire all set and working…..

Great Customer Support!!!!!

## I think I’m in love with you guys

I think I’m in love with you guys!!!!!

Just bought Chemistry Made Easy…..

## Impressed with Calculus Made Easy for Ti-Nspire

Hi Mike

I was so impressed with CME that I bought AME and PME and they are both first-rate.

I’ll be buying more as they appear.

Your apps have made the Nspire a lot more useful to me than it was – in fact, I’m beginning to like it quite a lot.

Congratulations on the hard work, I suspect your nspire apps will be even more successful than the Ti89 apps.

Best wishes

## TiNspire CX CAS : Solve Differential Equations – Step by Step – using LaPlace Transforms

Using the Differential Equations Made Easy APP at https://tinspireapps.com/?a=deqme you can solve Differential Equations using LaPlace Transforms as shown below:

## TiNspire : Volume of Solids of Revolution using Disk, Washer and Shell Methods

Computing the Volume of a Solid of Revolution using the TiNspire CX CAS can easily be done – step by step – using the Calculus Made Easy at www.TinspireApps.com .

Here is how.

Let’s start with the Disk Method. We just select that option in the menu:

Then this pops up :

Now, enter the given function in the top box and the given interval below. Automatically, the answer will show in the bottom with correct integral setup and the correct answer.

Similarly, when using the Washer Method for two functions we have:

Finally, the Shell method works the same way :

In conclusion, the just like all other Calculus topics finding the Volume of Solids of Revolution using the Disk , Washer and Shell Methods can be done easily using Calculus Made Easy at www.TiNspireApps.com .

## Gauss Seidel Method – Step by Step – using the TiNspire CX CAS

Say we have to solve the following system of equations using the Gauss Seidel method.

We just launch the Numerical Analysis Made Easy app at www.TiNspireApps.com , go to Menu option A 2 and enter the problem as shown below using matrix A and matrix B:

and

until we finally arrive at the last step :

## TiNspire Users in Finnland comments

Kuulin koulussa 3 ihmisen ryhmän puhuvan Calculus kurssista miten hän läpäisi kurssinsa sovelluksen, avulla joka näytti kaikki välivaihe ratkaisut.

Luokkakaveri oli puhunut myöskin ohjelmasta, jonka nimi oli Calculus made easy, mikä näytti kuulemma välivaihe ratkaisut.

Yhden matikan kurssin reputtaneena ja toisenkin ehkä myöskin, turhautumiseni matematiikka kolmannen matikan Calculus kurssiin alkoi olemaan stressaavaa.

Päätin ostaa Calculus Made easy ohjelma TI-Nspire CX CAS laskimeen, tämä ohjelman avulla olen onnistunut tekemään kotitehtäviä jotka, ovat olleet haastavia minulle!

Erittäin hyödyllinen ohjelma niille jotka eivät ole keskiverto tasoa matikan laskemisessa.

## Tinspire CX : Black Scholes Pricing – Step by Step

The Black Scholes Option Pricing may be used to compute the fair market value of options, its computation requires some level of mathematical analysis. If you own a Tinspire CX you can easily compute the Black Scholes Put and Call pricing – step by step – using the Portfolio Made Easy app at https://www.tinspireapps.com/?a=PIME . Just follow the steps below.

Select 1: Black Scholes : Call & Put Price

Enter the expiration date (in days), the stock price , its volatility (in %) , the strike price and the risk-free rate (in%)

Notice how the value are plugged into the Black Scholes formula. Notice how the 60 days are automatically divided by 365 days to turn the 60 days into a fraction. Additionally, the volatility and the risk-free rate re expressed as decimals.

After computing the parameters d1, d2 and the values of the normal distribution the Call price C is determined, here C = 49.4468

Lastly , the Put Price is computed, here P=37.937

The computation is easily accomplished simply by entering the given values, and it is always correct 😉

## TiNspire: LaPlace Transforms of a Piecewise-Defined Function

**Laplace transform over Piecewise def. Function**

Example:

f(1) = 3 defined over 0<= t <2

f(2) = t defined over t >= 2

To find the LaPlace Transform use Differential Equations Made Easy at

https://www.tinspireapps.com/?a=DEQME and select LAPLACE TRANSFORM OF PIECEWISE DEFINED FUNCTION and enter as follows:

We use infinity since the function f2 is not bounded. If it was bounded by for example 10 then we would have entered as [0,2,10]

## Ti-Nspire : Step by Step Definite Integrals

Computing definite Integrals using the 1. Fundamental Theorem of Calculus can be achieved using Calculus Made Easy at https://www.tinspireapps.com/?a=CME

Use option 8 in the INTEGRATION menu

Enter function f(x) and bounds [a,b] as shown below

View the Integration steps, here, the Power Rule is applied.

Lastly, plug the bounds into the above Antiderivative, subtract and that’s it!

## Tinspire CX CAS : Potential Function and Conservative Vector Field – Step by Step

To Find the Potential Function for a given Vector Field such as the one at http://tutorial.math.lamar.edu/Solutions/CalcIII/ConservativeVectorField/Prob4.aspx

use the Vector Calculus Made Easy app at https://www.tinspireapps.com/?a=VCME , go to option 3,4

and enter the Vector Field as:

Since the 2 partial derivatives match the Vector Field is conservative

and the Potential Function is found as shown below:

## Ti NSpire CX: Implicit Differentiation – Step by Step

Using Calculus Made Easy on the TiNSpire CX at https://www.tinspireapps.com/?a=CME

choose IMPLICIT DIFFERENTIATION in the menu , then enter the equation of a

given curve as shown below:

The Implicit Differentiation process continues until step 5)

VOILA ! easy as pie! The handy TiNspire CX can not only Implicit Differentiation Step by Step but can do ALL

of Calculus Step by Step!

## Confidence Intervals and Margin of Error using the TiNSpire CX

To find Confidence Intervals of Proportions using Statistics Made Easy at https://www.tinspireapps.com/?a=SPME use option 7

Next, the given proportion po , sample size n and the confidence level alpha as shown below:

Automatically, the correct setup and solution shows in the bottom window.

To also find the sample size given the Margin of Error use option 9:

you will enter the given Margin of Error, proportion and the confidence level Alpha

Again, the correct setup is shown and the sample size is computed step by step, here we get n>=441.7187