Let z=(x,y) where x=rcos@ and y=rsin@. Show that &z/&r = cos@(&f/&x)+sin@(&f/&y)

HOME > > Let z=(x,y) where x=rcos@ and y=rsin@. Show that &z/&r = cos@(&f/&x)+sin@(&f/&y)

Let z=(x,y) where x=rcos@ and y=rsin@. Show that &z/&r = cos@(&f/&x)+sin@(&f/&y)

[From: ] [author: ] [Date: 11-12-03] [Hit: ]

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Thanks for helping

x= rcosα ==> ∂x/∂r = cosα
y = rsinα ==> ∂y/∂r = sinα

∂z/∂r = ∂z/∂x.∂x/∂r + ∂z/∂y.∂y/∂r
= ∂z/∂x (cosα)+∂z/∂y (sinα)

The heck is & supposed to be? lowercase delta? Further, explain your notation if you want people to understand.

keywords: and,rsin@.,that,Let,Show,sin@,amp,cos@,rcos@,where,Let z=(x,y) where x=rcos@ and y=rsin@. Show that &z/&r = cos@(&f/&x)+sin@(&f/&y)

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