1. Creating a user-defined function Write a user-defined MATLAB function named PBTask4p1_f.m for the following math...

  

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1. Creating a user-defined function Write a user-defined MATLAB function named PBTask4p1_f.m for the following math function with x the input argument and y the output: y(x)=0.8x-13x-5x The function should work for x being a scalar or a vector. Write a script file named PBTask4p1.m to a) Use the function to calculate y(-5) and y(4) and display the results in command window b) Use the function to make a plot of the function y(x) for -5 x 5. Label the x-axis and y-axis of the plot like the one as follows. 200 Aandino 150 100 0 50 -100 Input x 1. Creating a user-defined function Write a user-defined MATLAB function named PBTask4p1_f.m for the following math function with x the input argument and y the output: y(x)=0.8x-13x-5x The function should work for x being a scalar or a vector. Write a script file named PBTask4p1.m to a) Use the function to calculate y(-5) and y(4) and display the results in command window b) Use the function to make a plot of the function y(x) for -5 x 5. Label the x-axis and y-axis of the plot like the one as follows. 200 Aandino 150 100 0 50 -100 Input x