Parametric and Polar functions on 50G - Printable Version +- HP Forums ( https://archived.hpcalc.org/museumforum)+-- Forum: HP Museum Forums ( https://archived.hpcalc.org/museumforum/forum-1.html)+--- Forum: Old HP Forum Archives ( https://archived.hpcalc.org/museumforum/forum-2.html)+--- Thread: Parametric and Polar functions on 50G ( /thread-163704.html) |

Parametric and Polar functions on 50G - Ben - 03-02-2010
Greetings everyone. Re: Parametric and Polar functions on 50G - Eddie W. Shore - 03-03-2010
Not on the graph, I think you have do this from the home screen.
Re: Parametric and Polar functions on 50G - John McCormick - 03-03-2010
Hi Ben, I was a TI-82 user until a few years ago, so I know where you're coming from. What you describe on the TI 8x series is a real convenience, but that kind of specialization makes the your TI a much less flexible tool. I use my 50g in RPN mode with soft menus. I store information in a directory structure similar to a personal computer. I have directories like MATH, PHYS, etc and each has subdirectories based on chapters and sections down to individual problems. This allows me to store the plot, equations, derivatives, matrices, and nearly anything else for any particular problem all together in one place. Yes, I can carry my homework around on my calculator. I use the Archive command to back it all up. Ok, so what does all that have to do with your question? It puts the lack of a corresponding function on your HP 50g into perspective. On your HP, you can compute derivatives symbolically, store the result, and then recall the result to the stack and use the SUBST (substitute) function in the ALG menu to plug in a numerical value (or a list of numerical values!) on the stack or you can plot the derivative and look up values in the table. Use the variable EQ to store an expression to plot. You can also plug your own values into the independent variable on the table if you select "Build Your Own" in the TBLSET screen under Type. Note that you can even store the table you produce! So it's a different approach and it takes some practice, but it's much more profitable in the long run. Programming can make a lot of this happen with a few button presses.
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