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You can ask questions or provide feedback about Interactive Mathematics here. Let me know about any mathematical or typing errors in so they can be fixed.

If you are asking a math homework question:

Note 1: Show your working so I can see where you are getting stuck. If you can't get started, please indicate which part of the question you don't understand.

Note 2: I won't do the whole problem for you since that only helps you to get a good mark − it doesn't help your learning. See this example for a student who puts in the appropriate effort: Summation Notation.

Note 3: I will only help you with one question at a time. Remember, this is a free service!