How would I solve these problems?

4 - Exercise 160 . (1pt) Use the amount of change formula to give an approximation to v2. (1pt) Find ~, when y = sin(x) tan(x) . (1pt) Find dr, dy, when y = x - x' cos(x) (1pt) Find , when y = x sin(x2 + 3x) (1pt) Find d? dr2 , when y = cos(ex) (1pt) Find dr, dy, when y = In(x2 + x + 1) (1pt) Find dy, when y = In(ex + x2) (1pt) Use implicit differentiation to find . when z and y are defined via the following equation y sin(ry) = y2 + 2 (1pt) Use implicit differentiation to find @ when x and y are defined via the following equation xy ty =-8