In problems 1 -5, differentiate the given log function (don't simplify results) 1 . y = In x tan x 2. y = In(x tan x) 3. y = x In(tan x) 4 . f ( x ) = In2 x x 3 (Note: In(x2) # In2 x) 5 . y = sec(x3 + In(2x +5) 6. Find an equation of the tangent line to y = In(x2 + 4x + 7) at x = 1. Ta. Find critical values for the function f(x) = In(x2 + 4x + 7) (same as in the last problem) b. Use the 2"d derivative test to determine if the critical values yield a relative max. or min. 8. Find the equation of the normal line to y = In (x tan x) (Problem 2) at x =