19.] Calculate the left hand sum and the right hand sum for the function )f(x) : 2x2 + x for x=2 to x=10 using Ax = 2. [A] The left hand sum is 720 , and the right hand sum is 960. [B] The left hand sum is 360 , and the right hand sum is 960 . [C] The left hand sum is 720 , and the right hand sum is 1200 . (D) The left hand sum is 360 , and the right hand sum is 600 . 16.] The table below gives some values for f'(x). Assuming f(x) is a continuous function, which statement is true? x 1 2 3 4:. U1 UN f'(x) -4 -1 2 W l 4:. l -~..1 [A] There is a local maximum between x=2 and x=3 (B) There is a local minimum between x=1 and x=2 (C) There is a local maximum between x:4 and sz [D] There is a local minimum between x=4 and x=5