Archive for the ‘Uncategorized’ Category

Balancing a chemical equation using the TInspire CAS CX and the Chemistry Made Easy app – step by step

Friday, March 31st, 2017

Here is a solved example:

When balancing the chemical equation: Fe2S3+O2=Fe2O3+SO2

The setup is a_*Fe2S3+b_*O2=c_*Fe2O3+d_*SO2

or : a_*(2Fe+3S)+b_*(2O)=c_*(2Fe+3O)+d_*(1S+2O)

This sets up : 2*a_=2*c_ and 3*a_=d_ and 2*b_=3*c_+2*d_

which has the solution : {a_,b_,c_,d_}={2,9,2,6}

Thus, 2*Fe2S3+9*O2=2*Fe2O3+6*SO2

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The customer service at CME is fantastic and The Riemann sum section is especially good.

Wednesday, February 1st, 2017

The customer service at is fantastic, they replied in a very timely manner. This kind of service is rare.

I am using the Calculus Made Easy app

I use the app a great deal in checking work and to perform investigations.

The Riemann sum section is especially good.

Chemistry App for the TiNspire CX CAS at has been updated : Bases, Acids, Equilibrium, Dissociation Constant, Valence Electrons

Sunday, December 18th, 2016

It seems that the Stoichiometry section of our Step by Step Chemistry App has doubled over the last few months, lots of new computational Chemistry has been added. Find app updates below:

– Valence Electrons of Atoms and Molecules
– Equilibrium Constant Kc
– Equilibrium Composition
– Kp = Kc*(RT)^n
– Equilibrium of weak bases
– Equilibrium of weak acids
-%-Dissociation and Dissociation Constant K ,
– Find pOH and PH of Bases.
– Improved Gas Laws
– Improved Step by Step Equation Balancer
– Mole <-> Mass Converters
– Rydberg Formulas

Calculus Made Easy App for the TiNspire CX CAS at has been updated : Newton law of Cooling, Parametric Eqns, Root Test , etc

Sunday, December 18th, 2016

We love Calculus and enjoyed implementing the following updates:

– Differential Equations: Eulers Method, Newton Law of Cooling, Radioactive decay -Parametric Equations : given Velocity v(t) find Tangentline, Curve Length, etc – Convergence Test: The Root Test was added
– Further improvements to Step by Step L’hopital Rule, Limits and Step by Step Integration were made

Calculus Made Easy app is phenomenal

Sunday, October 16th, 2016

Thanks for the great products and superb service you deliver.

Your CME app is phenomenal and am actually looking forward to writing exams now 🙂

Thanks for making it possible on the TI89!!!

Keep up the good work

How to do Proof by Induction on the TI89 using Finite Math Made Easy

Saturday, September 17th, 2016

How to solve these problem with the finite math app, I know there is a induction function but I’m typing in these wrong it seems. I attached a picture for reference.





to get


That simple 😉

NEW APP: Solve Numerical problems step by step using the TiNspire

Friday, September 2nd, 2016

Numerical Analysis Made Easy for the TiNspire CAS CX was just released at .

Great for numerically solving Differential Equations, Taylor Series, Differentiation, Integration, Matrices, Regression, Markov Chains, Polynomials , Algebra and more.

For more details check out :

It’s like Wolfram Alpha in your TI calculator

Friday, September 2nd, 2016

I struggled with derivatives and integral.

Thankfully Calculus Made Easy made my life easier by showing step by step solutions.

It’s like Wolfram Alpha in your TI calculator!

love your products , great learning tool !!!

Friday, September 2nd, 2016

I have high regards for your product and customer service, Ive bought 4 different apps over the past year or two and Linear Algebra Made Easy being the 5th.

Overall I love your products , they are a great learning tool to me.

I am currently enrolled in an electrical engineering technology program.

A lot of the courses use higher level math and physics; however most classes don’t use a text book and if it does the material is different from what the teacher is showing us.

I have always been a self learner to me this translates to doing as many different problems as I can, in this aspect these apps help me in numerous ways.

-Double checking my answers

-Seeing a different method to solving a problem

-Formula reference opposed to multiple pieces of paper

-Help when I get stuck

-Alternative solution to the "5000 problems solved in ……" types of books


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

Wednesday, June 1st, 2016

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.