## Archive for May, 2015

### Weekly Giveaway Puzzle : TI89 MATH APP

Sunday, May 31st, 2015

WEEKLY GIVEAWAY PUZZLE to win a FREE TI 89 MATH APP OF YOUR CHOICE!!
Ahead of a big celebration, a king receives a delivery of 1,000 bottles of beer.
But there is a slight problem: one of the bottles has been poisoned.
The bad beer is indistinguishable in every way, except that it causes food poisoning about one hour after ingested.
The king is short on time and bodies.
The party is in a few hours and he only has 10 guards to spare.

How can the king identify the bad bottle?

Email your solution with explanation: support

### And Pinterest too

Saturday, May 30th, 2015

Forgot to mention our favorite:

PINTEREST  !!!!

pin  our  boards at

https://www.pinterest.com/ti89/

Saturday, May 30th, 2015

Seeing is believing!!

Click on the icons :

Step-by-Step Solutions on your TI89 in Math & Science & Finance.

### How to compute curl on the ti89

Wednesday, May 27th, 2015

Q: How do you use the vector module in Calculus made Easy to find the curl?

A: in Calculus Made easy select vector calculus under F6. Then select curl under F1 5

Enter a 3d vector function such as [x,x^4*y,x*y*z]

Select Cartesian coordinates as you are using those.

Press Enter to curl.

Easy.

### show steps on the ti nspire cas

Wednesday, May 20th, 2015

While the TI Nspire is colorful and has lots of great features it does not provide Step-by-Step
solutions like the TI89 does using STEP-BY-STEP Apps for Math & Science & Business such as Calculus Made Easy, Statistics Made Easy etc (for a full listing of 20+ step-by-step apps check here www.ti89.com)

In the future , the TI Nspire and the TI Nspire CAS will be able to do the same as the TI89 APPS can do.

### Youtube Video on : How-to Transfer an APP to the TI89 calculator

Tuesday, May 19th, 2015

Watch our instructional 1 minute YOUTUBE video on how to transfer an APP to the TI89 here https://www.youtube.com/watch?v=4A6gP8IrbDk

### Win free TI89 Made Easy APPS

Monday, May 18th, 2015

Our Blog is at blog.ti89.com , you can CHAT with us any time , and call for advise if you wish.

Get social with us, more updates will be coming soon.

In the mean time, check on the top left of www.TI89.com: master the challenge

Regards,
Mike

Step-by-Step Solutions on your TI89 in Math & Science & Finance.

### Solving 2nd order non-homogeneous Differential Equations step-by-step

Saturday, May 16th, 2015

Q: How can i solve the Differential Equations shown in images?

A: There are different ways to solve the two 2nd order Differential Equations using Differential Equations Made Easy. First , to view the solution to #1 , select F2 3 (Non Homogeneous) and enter b=-8
c=17
g(x) = 34x+1 as the right side of the D.E. Press Enter to view the general solution.

Depending on the right side, you can select methods such as Undetermined Coefficients or Variation of Parameter , both under F2, to view steps.
Since the right side in #1 is linear , Undetermined Coeffients is a great way to solve . Reenter the same way as above and you will get step-by-step solutions. Similarly, when using Variation of Parameter.

#2 can be solved in the same fashion as #1

### Linear Algebra Made Easy UPDATE: Solve a system of equations in matrix format with parameter solution

Thursday, May 14th, 2015

We just updated Linear Algebra Made Easy :
It can now step-by-step Solve a system of equations given in matrix format with parameter solution.

A wonderful description of the 3 different types of solutions ( (in)dependent or inconsistent ) can be found at
https://people.richland.edu/james/lecture/m116/matrices/matrices.html

Only dependent solutions yield parameter solutions.

Linear Algebra Made Easy will solve all 3 types of solutions for you step by step , find it under F2 Option F

### Linear Algebra Made Easy UPDATE: Solve a system of equations in matrix format with parameter solution

Wednesday, May 13th, 2015

We just updated Linear Algebra Made Easy :
> It can now step-by-step Solve a system of equations given in matrix > format with parameter solution.
>
> A wonderful description of the 3 different types of solutions ( > (in)dependent or inconsistent ) can be found at
> https://people.richland.edu/james/lecture/m116/matrices/matrices.html >
> Only dependent solutions yield parameter solutions.
>
> Linear Algebra Made Easy will solve all 3 types of solutions for you > step by step , find it under F2 Option F
>