Defining Functions in MATLAB: A rectifier is a device that allows current to flow in one direction, but not the other. Mathematically, a (positive half-wave) rectifier can be represented by the piecewise function 560) - {% izo Write a MATLAB function called rectify (1) to simulate this device. 4. Plotting Basic Signals: Write a MATLAB script to plot the sinusoidal voltage i(t) = 7cos (2011) for 0 st 0.5 s. On the same graph, use the results of the previous problem to plot the signal that results when i(t) is rectified. Be sure to label your axes and add a legend.