1. Use logarithm differentiation to find the derivative of the following functions. a) f(x) = (sin x ) tana b) f(x) = (sin x ) Inc c) y = xx d) y = (7+1)2 (2-4) 3 (5x+3) 3 2. Evaluate the derivative of the following functions. a) f(t) = In(tan-' t) b) f(x) = csc-1(taner) c) y = xcot (x/3) 3. Find the equation of the tangent line to the graph of f at the given point. f(x) = sec (ex); (In 2, /3)