Write a MATLAB script to generate and plot the following functions on the interval $0<=$x$<=4\backslash$pi : Here is the function

y$=$sin$($x$)$

y$=$cos$(2$x$)$

y$=$sin$($x$)$cos$($x$)$

Plot these functions using different line styles and colors, label the axes appropriately, provide a title for the graph, and include a legend to distinguish between the curves.