Note For the following problems, assume that all the given angles are in simplest form, so that if A is in QIV you may assume that 270 < A < 360. If cos A = +with A in QIV, find sec 2

L18 - 9 The Chain Rule: Review If g is diﬀerentiable at x and f is diﬀerentiable at g(x), the function F = f ◦ g = f(g(x)) is diﬀerentiable and F (x)= If u = f(xidinileChi uliss d du General Power Rule: [u ]= nu n−1 dx dx d (e )= d (e )= dx dx d (sinx)= d (sinu)= dx dx d (cosx)= d (cosu)= dx dx d d (tanx)= (tanu)= dx dx d d (secx)= (secu)= dx dx