1. Use MATLAB to graph the following equations on one figure over the following range of x: -1 x 1. Put all plot commands in the m-file.

Please use the following formatting instructions.

Draw the graph of y1 using a solid blue line, draw the graph of y2 using a dashed red line, and draw the graph of y3 using a dashed green line.

Create a legend to indicate which curve is which.

Be sure to label your axes and a title.

Use enough points (i.e. adjust your range of x values) so your graphs look like smooth curves.

sin 2Tt.x 1+x2 1+x2 1+x2