4. Find the values of the first and second derivatives of the expression p = (5sin 30) when has a value (in Radians) equivalent to 22 5. Show that the derivative of y=x. (2x-x) has a 0g value of -3.17 when x = 2 then find the value of the second derivative when x = 2 6. If f(x)=(5x3x) (20-10x) use the product rule to show that f'(x) has a value of 460 if x is given as - 1. Once confirmed then provide an expression for f"(x) hence find the value(s) of x where f" (x) = 0