Which of the following creates 100 equally spaced points between -pi/2 and pi/2? Select one: a. linespace(-pi/2, pi/2, 100)
b. linspace(-pi/2, pi/2, 100)
c. linespace(pi/2, 100, -pi/2)
d. linspace(-pi/2, 100, pi/2)

Use a while-end loop in a script file to calculate the sum of the first n terms of the series: summation sign on the top n bottom k=1 : )^k * k^2 +5k)/3^k show the script file and the two results of n = 10 and n = 20.