+xx. Write a Python program to that takes as input a floating point number to use as the width of rectangles used to estimate the integral -++ The program will estimate this by taking the sum of rectangles of these these widths. For example, the sum of the areas of the four rectangles of width is shown on the right. Please demonstrate the use of a for loop in your program. What happens to the estimate when the width is smaller? What should the area be? y 3 2 f(x) = x +x X