Weird answer for d(sin(sin(x)))/dx

07292018, 04:06 PM
Post: #7




RE: Weird answer for d(sin(sin(x)))/dx
(07292018 02:21 PM)Aries Wrote:(07292018 01:11 PM)ettlz Wrote: Prime 2.0.0.13865 gives a bizarre form of the derivative of sin(sin(x)): I get (1/2)*cos(sin(x)+x) + (1/2)*cos(sin(x)+x). OK it's correct but I'd expect cos(sin(x))*cos(x) (straightforward chain rule). Getting to that form doesn't work with simplify() and I've not played around with the other trigrewrite functions. Hp prime gives the same result. Guy R. KOMAN, hp 50G, hp Prime Rev. C 

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Messages In This Thread 
Weird answer for d(sin(sin(x)))/dx  ettlz  07292018, 01:11 PM
RE: Weird answer for d(sin(sin(x)))/dx  Tim Wessman  07292018, 01:13 PM
RE: Weird answer for d(sin(sin(x)))/dx  ettlz  07292018, 01:18 PM
RE: Weird answer for d(sin(sin(x)))/dx  parisse  07292018, 01:38 PM
RE: Weird answer for d(sin(sin(x)))/dx  Aries  07292018, 02:21 PM
RE: Weird answer for d(sin(sin(x)))/dx  Komanguy  07292018 04:06 PM
RE: Weird answer for d(sin(sin(x)))/dx  Tim Wessman  07292018, 03:57 PM
RE: Weird answer for d(sin(sin(x)))/dx  Komanguy  07292018, 04:12 PM
RE: Weird answer for d(sin(sin(x)))/dx  DrD  07292018, 04:19 PM
RE: Weird answer for d(sin(sin(x)))/dx  Komanguy  07292018, 04:25 PM
RE: Weird answer for d(sin(sin(x)))/dx  DrD  07292018, 05:43 PM

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