Spring Semester!  is your TI-89 Loaded for Calculus?


Struggling with Calculus?          Own a TI-89 Series?

Need Step by Step?     Homework Taking Too Long?

Integral Calculator?     Derivative Calculator?     Chain Rule?

 Trouble During Tests?

My name is Tom and I program TI89 calculators to solve calculus problems step by step and showing all work.

I actually disliked (hated) calculus so much, I built an app with 200+ programs inside the  TI-89 Series calculator to show the correct answers step by step, right on my TI-89 calculator screen.

 I collected tests from students all over the US and built solutions to the most common questions from midterms, finals and homework from college calculus 1,2 and 3.

Enter your equation and get your calculus solution line by line with every step so you can write it down on tests & homework. Pass calculus and move on with your life! KCCO

Partial Fraction Decomposition              Watch How it Solves a Real Calculus Test


There are 187 Extra Tutorial Videos Here

Tom-    I showed my ex, who is a calculus professor, and he was waaaaaaay impressed. And he is an arrogant ass, who never helped me ever…I could tell he wanted to hate on it, but he couldnt. 

Kristin P

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You get all the calculus 1,2 & 3 programs below for the price of a serious happy hour. That all four years of calculus, updates forever included.

100% Guaranteed or your money back



Phone Support (my favorite) | Email Support | Facebook Support | Twitter Support

I do it ALL and it is IMMEDIATE!


Calculus 1 Programs Included

(Scroll down for Calculus 2 & 3)

Follow Blue Link for Video Examples


Average Rate of Change

Chain Rule | dy/dx = f’[g(x)] * g’(x) | dy/dx = f’(u) * u’ | (5x²+7)^5 | sin(ax) | 7*cos(5*x^2) | (tan (5x))^5  Video Example 2


cos(a * x) derivative

cos(a * x) integral

Critical Numbers

Critical Points

Definite Integral |  = ∫ [ f (x) ] dx

Definition of a Derivative

Derivative In(x)

Given Delta – Find Epsilon

Derivatives/Algebra (step by step) | √(x) | 3√(x) | 5/√(x) | 5/x | 5/8x | 5/x² | (5x)² | 5x²/8 | x(x+5) | x^½ | x^(-½) | (x²-4)/(x+2) | (x²-4)/(x-2) | (5x²+7)^5 | √(5x²+7) | (5x²+7)½ | ³√ (5x²+7) | (5x²+7)¹/³ |  sin | cos | tan

Difference Quotient

ê(x) Derivatives

ê(x) Integrals

Equation of a Tangent Line (y=mx+b)

Equation of a Line

Equation of a tangent line at a Curve  | (y = mx + b)

Fence Area

Graphing by Hand | Concavity | Critical Points | Crosses x axis | Inflection Point | Intervals of  Increase | Intervals of Decrease | Local Maximum & Minimum

Local Minimum & Maximum  

Implicit differentiation | y³+y²-5y-x²  = -4

Inflection Point

Integrals/ Algebra (Rewrite selected & Integrate) | n / √(x) | (x² + n)² | (x³ + n)/x² | ³√(x) | n / x² | n / ³√(x) | n / x√(x) | 1/x³

Integrals – Answer Only

Integration by Parts | ln(x) | n*e^x   Video Example | sin(x)  | cos(x) | sin(x)  and cos(x)

Intervals of Increase or Decrease

Limits | Instructions | Definition | Execute Limit

ln(x) | Derivatives

ln(x) | Integrals

Local Max & Min | Extrema

log(x) Log to Other Base | Evaluate | Solve for x | Exponential Form | Logarithmic Equation | Differentiate | Integrate

Log to Base a


Natural Log | ln(x)

Product Rule( f (x) )( g (x) )

Quadratic Formula

Quotient Rule | ( f (x ) ) / ( g (x) )

Relative Extrema

sin(a*x)  Derivative

sin(a*x)  Integral

sin(a*x) Integral


tan(a*x) Derivative

Trig & Half Angle Formulas & Identities | sin(u)*cos(v) | [1+cos(2x)]/2 | cos(2x)2 | [1-cos(cs)]/2 | 1-cos(2x) / 1+cos(2x) | sin²(x) + cos²(x) = 1 | tan(x) | tan²(x) |  Trig d/dx cos(2x)/2 | cos(2x) | cos(x) | cos²(x) | cot(x) |  csc(x) |  csc²(x) | sec(x) |  sec²(x) | sin(2x) |  sin(x) | sin²(x)

Trig d/dx Identities

U – Substitution

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Recent Testimonials Winter 2014/15

You are an angel sent from above TOM!!! Thank you so much for being patient with me. I got the programs to work and I am very confident I am going to pass this class once and for all. The Double and Triple Integrals programs are a life saver! Thank You Thank You Thank You!


Hello Tom- I’m sure you get this a lot, but I have to start by saying how much of a help your programs have been to me. Being a visual learner, I have been having difficulty with my professor’s style of teaching. He does not go over examples, but rather explains mathematical theory in complicated and confusing ways.  – Eric

Tom…I think that I’m finally done with Calculus II. In the prior test I got 78 and yesterday I finished all the problem on the test. I think I should be able to remain around the same grade. Thank you so much for your help; your programs really made the difference. They didn’t just solve the problems for you, in my case, they gave me the confidence and security I had lost with those stupid professors and the way they teach. To be honest, studying the programs on my calculator taught  me how to solve problems that I couldn’t do before due to the way they were presented. I felt confident and secure yesterday, and it only possible because either I remember  how to do the problems or the calculator would. Thanks one more time for time, dedication and quick responses. There is no other person in the whole world that would do what you do for us , college students being  killed  with freaking calculus classes.      John

Tom-     Got it to work with that link you sent me!  Just wanted to say thanks for all the great work you do, and for helping me pass this calculus class.  I’m going to tell everyone about this and make them pay the $30 dollars because you have done a splendid job programming my friend.  Let me know if you have any new programs for derivatives or integrals and Ill let you know if I need any more help!  Much thanks,                -Eric

I basically just needed to say that you’re an amazing man. Basically saved my life during my emag theory course    

-DoubtingThomas  (Youtube vectors review here)

oh my god I figured it out. You’re the freaking best!      -Sarah

Thanks Tom. I appreciate you taking the time to break down and explain these to me. :0)     -Nelson

 Tommy,     Great talking with you last night. I already liked you for developing this “most excellent program” but after our conversation I concluded you to be a great guy. I’ve been playing with this program most of the night, took in a few “z’s” and am back for more. This program really is superb. I did, however, notice that for some unknown reason when I attempt to do Relative Extrema’s and Trajectories that both programs came up as “Program not Found”. I’m not sure if I will be encountering the Trajectory stuff in this semester of Calculus but I do have a test this Thursday that includes Relative Extrema. Any suggestion, oh Master of this great creation?! I’m going to be gone most the day but should be home late afternoon if you got time to call. Same number (843-xxx-xxxx). That’s Myrtle Beach, 3 hours ahead of you and more golf courses than you can shake a stick at. Thanks    -Joe

Wow! Awesome! These are great, so great, thank you!            -Kristen

Tom is the man! His program is helping me pass my calculus class. He was willing to help me immediately when I couldn’t get one of the programs working! This application is in my opinion a STEAL! I’ve never met Tom in person but I’ll owe passing this class to every step calculus.            

-YouTube product rule video comment

Calculus 2 & 3 Included Programs


A & B   Vectors A(x,y,z) B(x,y,z)  ||A|| Magnitude  ||B|| Magnitude  |  A – B  |  A – B Magnitude  |  A + B  |  A + B Magnitude  |  A + B + C  |  Find Resultant  |  Find Components  |  A * B Dot Product  |  |  A x B Cross Product  |  B – A  |  n * A  |  (n * A) + (n * B)  |   Area of a parallelogram  |  Component A direct B  |  cosine(AB)  |  Equation of a Plane  |   ax+by+cz+d=0  |  P&Q Points  |   Projection of A on B  |  Projection of B on A  |  Unit vector A  |  Unit vector B   Video Example 2

Acceleration  |  r(t) function

Angle of a Vector  |  r(t) function

Arc Length  |  f(x) system  |  r(t) system  |  y system

Average Rate of Change

Component of A Direction of B

Conservative Curl

Compute Curl at a Point Video Example

Compute Divergence at a Point

Cosine(∅) of A & B

Curl | Definition  |  PQR notation  |  Conservative  |  Divergence  |  Curl Problem  |  Compute Curl at Point | Compute Divergence at Point | MNP  notation  |  Conservative  |  Divergence  |  Curl Problem  |  Compute Curl at Point | Compute Divergence at Point

Cross Product AxB 

Definite Integral

Divergence of Curl

Divergence of Vector Field

Dot Product

Eliminate the Parameter (t)

Gradient   |  Definition  |  2 Variables  |  3 Variables

Green’s Theorem

Implicit Differentiation

Trig & Half Angle Formulas  |  1 + cos(2x)2  |  1 – cos(2x)/1 + cos(2x)  |  1 – cos(2x)/2  |  cos(2x)  |  cos(x)  |  cos²(x)  |  cot(x)  |  csc(x)  |  csc²(x)  |  sec(x)  |  sec²(x)  |  sin(2x)  |  sin(x)  |  sin²(x)  |  sin²(x) + cos²(x) = 1  |  tan(x)  |  tan²(x)

Linear Approximation (3 variable) | ax+by+cz+d=0

Line Integral Over Range  |  = ∫ ( f [(x(t),y(t),z(t)] * √ [ x'(t)² + y'(t)² + z'(t)² ] ) dt

Mass of Spring or Wire

Magnitude of a Vector  |  r(t) function

Parametric Equation  |  r(t) function

Partial Fraction Decomposition

Polar to Rectangular Conversions

Projection of Vector A on Vector B

P & Q Vector Points  | Position Vectors | Projection of a on b, b on a  |  Speed

Quadratic Formula

Sketch a Graph  | r(t) function  |  Make a Table of Points

Surface Integral  |  x,y  |  x,z  |  y,z

Position Vectors  |  Velocity  |  Acceleration  |  Speed  |  Unit Tangent Vector  |  Parametric Equation  | Standard (Linear) Equation

Speed  |  r(t) function

Sphere  |  Center Point  |  Mid Point  |  Equation  | Radius

Surface Area Revolving

Surface Integral  |  x,y  |  x,z  |  y,z

Tangent Plane to a Surface

Trig d/dx – Identities and Functions |  Half Angle Formulas  |  Reciprocals  |  Integration  |  Derivatives  |  1+cos(2x)2 | 1-cos(2x)  / 1+cos(2x) | 1-cos(2x)/2 | cos(2x) | cos(x) | cos²(x) | cot(x) | csc(x) | csc²(x) | sec(x) | sec²(x) | sin(2x) | sin(x) | sin²(x) | sin²(x) + cos²(x) = 1 | tan(x) | tan²(x)

U Substitution 

Vectors  |  Unit Tangent Vector  |  Unit Vector PQ/||PQ||  |  Vector Between P & Q


Volume of a Parallelepiped

Work  |  Force Field  |  Lifting Object  |  Pumping Oil



Don’t forget the programs come with my


Phone Support (my favorite) | Email Support | Facebook Support | Twitter Support

I do it all and it is immediate 



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Who Am I?

I’m the guy who went back to school like Rodney Dangerfield and wanted my degree in Electrical Engineering. It seems nowadays there is always one old person going back to college…I was that guy. I’m pretty smart but failed Calculus I and had to retake it.  The TI-89 calculator that was able to be programmed hadn’t come out yet during Calculus I.  When it did in Calculus II –  and I found out that it could be programmed – I was on my way and got A’s for Calc II and III (By the way, I Got an A for the Calc I retake also).

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Calculus I, II, & III

“Do not worry about your difficulties in Mathematics. I can assure you mine are still greater”.

-Albert Einstein

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In my experience professors teach theory and proofs and then test on mechanics which somehow (the mechanics)  get lost in their lectures.  Also, maybe understandably,  because of tenure and boredom in their jobs they might tend to get away from – or not get down to – the struggling  students level when they teach. In my programming of a problem, I can’t skip steps to the solution, somehow every step must be addressed and accomplished.  That’s what make my programs as designed so essential, helpful and perfect for the student.  Enjoy my programs, Tom

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