## Question

Hey Tom, I’m in precalculus and really struggling. I have purchased the college algebra app, equation solver app, and the precalculus app from the ti89 website. They have helped me get this far and are great but they don’t seem to be able to show the steps when the x or y is squared.

I know how to get the answer by looking at the graph but like you said I have to show my useless work. They also seem to have a problem solving problems with ln and e. To answer your question, I just want to pass and move on with my life. Will any of you programs help? Thanks

## Answer

My programs were designed by me so I could pass calculus.

In my day the TI-92 was invented (25 years ago) which I was required to purchase to take my Calc 2 semester class. The professor taught us how to use the ti-92 calculator which was invented by Texas Instruments could come up with the answers for derivatives and integrals.

In a Calc test you could use the calculator but if you put down an answer with out showing the steps you failed the problem. It had a word processing function which I discovered and I was struggling and hated calculus at the time so I scanned a problem with the steps in my notes from the professors black board explanation into the ti-92 and used the “word find” to access different problems to try and solve them in a test.

The problem was that it was slow, like having an open book test, you had to find the problem then read it and understand it to be able to solve the test problem with different variables.

So to solve that, I discovered that you could program the calculator and I was absolutely thrilled. I placed variables in different memory slots and used them in a million math functions that was available in the calculator and my fabulous programs were invented.

I got A’s in not only the calculus classes, but electronic classes and physics classes, which I programmed for also. The ti-89 calculator came out and I programmed away.

Now to answer your problem, what class are you in that requires this, calculus or algebra?

“Non linear equation” doesn’t register as being this problem, but who knows what your crazy professor came up with now days.

To solve a two variable equation you need two equations

You solve one equation, isolating the x or y value, and place that into the other equation and then solve that.

That takes knowledge of algebra, and anyone, including me, would need to write the steps down on a piece of paper to do this.

Now the big question, Is your goal to learn algebra, or learn how to actually solve this particular problem step by step?

Or like me, know how to solve it, but would like it programmed to quickly be able to write the useless answer on a test problem

and get on with more difficult ones?

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