Use three line segments connecting the four points to estimate the length of the curve on the graph off from x = 1 to x = 2. Graph f and a line graph of the four points in the indicated viewing rectangle.

1. f(x) = 0.5x³ + 2; (1, 1.5), (0, 2), (1, 2.5), (2, 6); [4.5, 4.5, 1] by [0, 6, 1]

2. f(x) = 2 0.5²; (1, 1.5), (0, 2), (1, 1.5), (2, 0); [3, 3,1] by [1, 3, 1]