Problem 7 and 8

cos(x 7. Implement the following equations in a function, value = problem 7-fa (N) and value = problem-7 fb (N) . Both functions converge to sinc(x) as N Prove this by plotting the functions on a graph for at least 6 cycles of the sinofe) sinusoid. Use separate plots if necessary. 1-1 8. Write a function to find the largest value of a vector and its index in the array. Pass both the value and its index back out. Then create a vector of length 500 of random real-values from 0 to 10 to test the function. 9. Write a function y problem 9(x) to implement the following graph for a single value. Then create a vector of x-values from -10 to 10 with a sufficiently high resolution (-0.01) to graph and plot the y-values to test the function. 3