Goten77
find the derivative below



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Goten77
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dw:1356620155294:dw

Goten77
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\[e ^{x}e ^{y}= \pi\]

hba
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wrt ?

hartnn
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use either product rule, or
\(e^x=\pi e^{y}\)
then differentiate.
if not mentioned, its always w.r.t x.

hartnn
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even better
\(e^{x+y}= \pi \\ x+y =\ln \pi \\ now \:\:differentiate.\)

Goten77
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i was going to use the product rule but using log propertys makes it easier....

hartnn
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yup, so dy/dx is just 1