+- 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: Another HP Prime CAS question (/thread-255105.html)
Another HP Prime CAS question - Michael de Estrada - 11-07-2013
When I enter COS(x)^2+SIN(x)^2 in CAS I get the result 1, which is correct since this result is true regardless of the value of x. However, if I enter COSH(x)^2-SINH(x)^2 in CAS I should also get 1 as a result, however, I simply get COSH(x)^2-SINH(x)^2 as a result instead. If I replace x with a numerical value instead, then I get the proper result of 1. Why ? And yes I am in radians mode and have Exact unchecked when I do this.
Edited: 8 Nov 2013, 2:35 p.m. after one or more responses were posted
Re: Another HP Prime CAS question - Michael de Estrada - 11-08-2013
Hello. Anybody home ?
Re: Another HP Prime CAS question - Han - 11-09-2013
Quote:
Hello. Anybody home ?
This is probably explained somewhere in the xcas documentation (regarding whether there exist substitution/simplification routines for hyperbolic trig functions.
Re: Another HP Prime CAS question - Michael de Estrada - 11-09-2013
Actually, I reposted this question and it was answered here.