Please use matlab!!!

4) Plot the following functions for x = [0, (47)2] using subplot, label the horizontal and vertical axes, and include a title: a) f(x) = 1 + cos Va; b) f(x) = V1 + cos z; and c) f1(x) = cos x, $2(x) = V1 + cos2 x and f3(2) f1(x) $2(x), for x = [0, 107], with all three curves in one plot. Use different line types and/or colors to differentiate them, and use legend to indicate which is which. Note: Each function must be written as an anonymous function, exactly as written