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marigirl
 one year ago
Differentiating :
Differentiate A=l*w with respect to w
marigirl
 one year ago
Differentiating : Differentiate A=l*w with respect to w

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marigirl
 one year ago
Best ResponseYou've already chosen the best response.0how does it end up as \[A=w*l\] \[\frac{ dA }{ dw }=w*\frac{ dl }{ dw }+l\] Where did that +l come from?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0dA/dw = w* dL /dw + d(w)/dw * L dA/dw = w* dL /dw + 1 * L

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1l is a function of w

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you have to assume l is a function of w for that to make sense. otherwise you would end with dA/dw = L * 1, since L is a constant with respect to w

marigirl
 one year ago
Best ResponseYou've already chosen the best response.0can you please also explain what happens here \[4r^2=l^2+w^2\] the model answers show that 4r^2 differentiates to zero

marigirl
 one year ago
Best ResponseYou've already chosen the best response.0again i am differentiating with respect to w
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