f(x) = (a + 1)e(x-(d+5))/(b + c + 1) 1B) Write clear variables to begin the exercise, then proceed to the following problem. Consider y = : f(x) above over the interval [d, d+ 10]. Use a for loop combined with a sum command to get a left-hand estimate and a right-hand estimate of the area between the function and the x-axis over the interval above. Assume that you will have 20 subrectangles for both estimates. Declare your results P1Bleft and P1Bright. = 1C) Write clear variables on a line in your script after your answers for 1B, then proceed to the following problem. Use the int command to get an antiderivative of y f(x), i.e. use MATLAB to compute the indefinite integral ff(x) dx. Hint: the output should contain the Gauss error function; so, if the output looks suspicious, it is probably okay. Declare your result as P1C. 1D) Use the int command to evaluate the definite integral d 10f(x) dx. Hint: the output should look like the previous problem. Declare your result as P1D. 1E) Use the vpa command to get a numerical approximation to the definite integral ♫d + ¹0f(x) dx. Hint: the output should be a decimal answer close to what you found in 1B. Declare your result as P1E.