HP Forum Archive 19

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Reduce fraction on HP50G Message #1 Posted by olivier scalbert on 12 Mar 2010, 2:12 p.m. Hello, When I derive and eval the following function: (x^3 -8)^(1/3), I get: x^2 * (x^3-8)^(1/3)/(x^3-8) Is it possible to simplify the (x^3-8) in order to get: x^2 / (x^3-8)^(2/3) Thanks very much, Olivier

Re: Reduce fraction on HP50G Message #2 Posted by Glenn Shields on 12 Mar 2010, 9:20 p.m., in response to message #1 by olivier scalbert It can be "forced" by the following: enter the expression, use DERVX in the CALC menu, press down-arrow to enter eqn writer, press down-arrow, down-arrow, right-arrow, EVAL, enter (to leave the eqn writer), then EVAL once more. You should have : x^2 / (cube root of x^3-8)^2, close to but not the fractional power you want. I'm a new user and after going thru the AUR twice, nothing comes back to me in this regard. Any suggestions? ☺

Re: Reduce fraction on HP50G Message #3 Posted by Glenn Shields on 12 Mar 2010, 9:22 p.m., in response to message #2 by Glenn Shields Sorry, that was my attempt at "alt + 1" with num-lock on, which is supposed to return a smiley. It appeared, really. Thanks, Glenn

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