How do u go about doing this---?
- To: mathgroup@smc.vnet.net
- Subject: [mg10844] How do u go about doing this---?
- From: "McAllister" <lmcallister@email.msn.com>
- Date: Tue, 10 Feb 1998 21:01:55 -0500
Let f(x) = sin(x)+cos(y)
-----------------
sin(x) - cos(y)
Show that
(df/dx)^2 + (df/dy)^2 =
2+cos(2(x-y))+cos(2(x+y))
-----------------------------------
(sin(x)-cos(y))^4
Thanks,
L.