I need help on this question. I keep getting it wrong.

1 Ay The area under the graph of y = and above the x-axis between 1 +x x = a and x = b is given by tan "b - tan a. See the figure. Find 0.5- 1 the area under the graph y = - and above the x-axis (a) between X 1 + x - a b 2 V3 x =0 and x = 13 and (b) between x = - 1 and x = 3 1... . . 1 (a) The area under the graph y = and above the x-axis between x = 0 and x = 13 is 1 + x 2 (Type an exact answer, using it as needed. Use integers or fractions for any numbers in the expression.)