Write a user-defined MATLAB function for the following math function: y(x) = 0.6xe-0.47* + 1.5x°e-0.6x The input to the function is x and the output is y. Write the function suc that x can be a vector (use element-by-element operations). (a) Use the function to calculate y(-2) and y(4). (b) Use the function to make a plot of the function y(x) for -4

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