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f(x,y)=2y / (y+cos x) .Find partial derivative w.r.t x

can someone teach me how to do this pls

thanx

can someone teach me how to do this pls

thanx

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- Thread starter teng125
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- #1

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f(x,y)=2y / (y+cos x) .Find partial derivative w.r.t x

can someone teach me how to do this pls

thanx

can someone teach me how to do this pls

thanx

- #2

TD

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If y doesn't depend on x, treat y as a constant and find the derivative wrt x as you normally do.

- #3

Astronuc

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- #4

quasar987

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- #5

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can someone show this because i don't know how to do

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Nothing else is to be shown.

- #7

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the formula is it vu'-u'v/(v^2) ??

- #8

VietDao29

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Uhmm, nope. The red-highlighted part is wrong. It should read uv', i.e the whole formula is:teng125 said:the formula is it vu'-u'v/(v^2) ??

[tex]\left( \frac{u}{v} \right) ' = \frac{u'v - uv'}{v ^ 2}[/tex].

Can you go from here? :)

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