Calculus Test #3 Done and more TI tricks

Survey says: “86%”

I hosed up the first page of the test. I scored some mercy points, but managed to botch up the 3 problems. After that, I had a few minor slip ups. It was a tough test and I’ll take the 86%. Currently I’m holding onto an 88% overall class grade. With one quiz and test left to go, I hope to get the overall grade bumped up a bit.

We’re getting into integrals in class now. I discovered that fnInt() on the TI-83 is just Int() on the TI-89. I also whipped up a program to calculate the area under a curve. Its based on a program from our calculus book. But the calculus book’s version only calculates the area based on the right end points. And it just spit out the answer. I needed it to do a lot more. My version calculates the right, left, and middle points and shows its work! I demo-ed it for some students and they were amazed. It took the prof a good 10 minutes to work the problem (and he only did 1 of the 3 variations while the program does all 3 variations) and the program had all the answers within 30 seconds by just pressing a couple buttons. Cheating? Its automating a repetive process. And I really needed a way to verify my “done by hand” work. I’ll have to get it posted.

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