a 10 20 7. Approximate / $4 + 1 d3; by dividing the interval [2, 10] into N z 4 equal 2 subintervale and using four rectangles and the right endpoint method . Round your answer to ve decimal places. {3 13133.] -_______________ 8. Draw a function f(x), dened for all real numbers at, with two local maximum and one local minimum. (2 pts)