Question 2

(b) Using first principles ( and a change of variables), show that the derivative of an even function is an odd function. Question 2: A spotlight on the ground shines on the wall 12m away. If a man 2m tall walks from the spotlight toward the building at a speed of 1.6m/s, how fast is the length of his shadow on the building decreasing when he is 4m from the building? Question 3: There are exactly two points on the curve x3 + y3 = 9 where the tangent line has slope VS. Find the