How to Connect a Ti89 Calculator to Mac Computers using TI-Connect v4.1

Here is a proven way for those of you that struggle to connect your Ti89 calculator to a MAC computer. This is what you need to do to get connected: Uninstall TI Connect v4.0 if installed. Download and Install TI Connect version 4.1  : https://education.ti.com/ticonnect/ticonnectmac41 . Beware: this link immediately downloads the .dmg file to your… (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)

Not only are these apps a life saver but when, the costumer service was even more impressive

I downloaded linear algebra and the physics made easy apps and I love them both !!!!! They are incredibly user friendly and helped me a ton, I just got a 100 on my linear algebra test using this app! Not only are these apps a life saver but when I had a question regarding downloading… (read more)

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

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 —

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

The customer service at TI89.com 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.

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)

Chemistry App for the TiNspire CX at www.TiNSpireApps.com has Bases, Acids, Equilibrium, Valence Electrons

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… (read more)

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

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… (read more)

The most prestigious apps + first rate customer support = absolute primo @ Smartsoft/ tinspireapps/ ti89apps/

Has anyone ever told you how awesome you are? This is really cool!! thank you… The most prestigious apps + first rate customer support = absolute primo @ Smartsoft/ tinspireapps/ ti89apps/ That’s not calculus but it’s an equation that can be proved!!!!

Calculus Made Easy app is phenomenal

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