Posted by Molly on Friday, February 22, 2013 at 6:56pm.
Is there a question here?
Sorry
y'=
just use the quotient rule. If
y = u/v
y' = (vu'-uv')/v^2
y' = [(1+tanx)(cosx) - (sinx)(sec^2 x)]/(1+tanx)^2
= ((cosx - (sinx)(tan^2 x))/(1+tanx)^2
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