I need help on this question

1 + 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 Ta. See the figure. Find 015- 1 the area under the graph y = - and above the x-axis (a) between X 1 + x -2 a b 2 x = 0 and x = 1 and (b) between x = - 13 and x = V3. . . ... 1 (a) The area under the graph y = - and above the x-axis between x = 0 and x = 1 is 1 + x 2 (Type an exact answer, using it as needed. Use integers or fractions for any numbers in the expression.)