Question 994489
Look at the link shown in one of the page's tabs, "For Students".
Follows guidance there.  


Ask your question as precisely as you can.  If your question is all in words as presented to you in your instructional document or book, then write your question and problem description exactly, word-for-word.  If your problem includes a figure or picture or graph, try to include or show it if you have the knowledge how to.