Reduce fraction on HP50G « Next Oldest | Next Newest »

 ▼ olivier scalbert Junior Member Posts: 1 Threads: 1 Joined: Mar 2010 03-12-2010, 02:12 PM 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 ▼ Glenn Shields Member Posts: 63 Threads: 8 Joined: Dec 2009 03-12-2010, 09:20 PM 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? ☺ ▼ Glenn Shields Member Posts: 63 Threads: 8 Joined: Dec 2009 03-12-2010, 09:22 PM 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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