I don`t solve z = int[0,x]f(x,y) dy . I guess ∂z/∂x = f(x,x) . can not underestand ∂z/∂y.
U udomin New member Joined Feb 10, 2016 Messages 1 Feb 10, 2016 #1 I don`t solve z = int[0,x]f(x,y) dy . I guess ∂z/∂x = f(x,x) . can not underestand ∂z/∂y.
