pi is equal to the following infinite sum: pi = 4 - 4/3 + 4/5 - 4/7 + 4/9 -.......... Write a program on octave with a for loop to compute and display an approximation X of pi using a truncation of...

pi is equal to the following infinite sum:

pi = 4 - 4/3 + 4/5 - 4/7 + 4/9 -..........

Write a program on octave with a for loop to compute and display an approximation X of pi using a truncation of the given sum. Your program should allow the user to enter the number of terms to be used for the approximation.