Use MATLAB to solve

Problem 3 Write a user-defined function called geometric_plot() that takes numeric single-element arrays N, a, and r as input arguments and that plots the first N terms of the following geometric series on an appropriately constructed stem plot where the independent variable of the plot is k and the dependent variable of the plot is the kth term in the series: kth term = ark-1 where k starts at k = 1 and ends at k = N. Note that a is the first term of the series and r is the common ratio. Check that the user's input value for N is an integer value greater than or equal to 1; if it is not, have the user enter a new value. Write a script file called "YourName_PA4_Problem3.m" that illustrates how this function works. Don't forget to include explanatory text for any results