A.as maple help page :
To export a plot:
1. Select the plot you want to export.
2. From the Plot menu, select Export.
Alternatively, right-click (Control-click, for Macintosh) the plot you want to export. The context menu appears. Select Export.
3. Select a format.
4. Specify the location and the name of the exported file.
B. you can easily right click on your plot,select copy and open a word file and select paste . now your plot has been copied.
C. u can export your plot data into excel and thus save your plot as a picture file,
D. if u have windows 7 , go to start-all programs-Accessories-Snipping tool, double click on it, and it will provied you a frame to choose and give you back the pictrue u want from every where.
E. you can also take a picture from your screen by PrtSc and save it into a document and then snip your plot from it .