Write a MATLAB program to evaluate the following mathematical expression. The equation should utilize variables for x,, and . For example, you might run the program with x =1,=2, and =3. P=21e(x)2/(22) This program calculates a Gaussian normal distribution. Note: In MATLAB Grader the variables x,mu, and sigma have already been defined for you. You should not create new x, mu, and sigma variables. Script