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OpenStudy (anonymous):
Help! how to differentiate y = u (x^-1) (cos x) ?
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OpenStudy (anonymous):
what is u?
OpenStudy (anonymous):
do u want dy/dx?
OpenStudy (anonymous):
u is also another fucntion, just like x, can just proceed with product rule of 3 terms to differentiate?
OpenStudy (anonymous):
then y is a function of two variables, u and x,isn't?
OpenStudy (anonymous):
we can find the partial derivative
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OpenStudy (anonymous):
ok THANKS!
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