Exercises 8a -16a x 1. Given y = show that the first derivative is y = by using 4a-+ x2 ( 4a2 + x2 ) 2 the quotient rule. -16a'x 2. Given the first derivative y = find the second derivative of the ( 4a2 + x2 ) 2 curve using any method you wish. 3. Set the second derivative found in question 2 equal to zero to determine the x-values of the points of inflection. 4. Use the values of x found in question 3 to find the value of the curve at these points. That is, substitute the values of x arrived at in question 3 to determine the y-values of the points of inflection. 5. Use your results in questions 3 and 4 to list the points of inflection of the curve