SOLUTION: Obtain the derivative of X tanX using definition

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Question 415509: Obtain the derivative of X tanX using definition
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
By the product rule,



%28d%2Fdx%29%28x%2Atan%28x%29%29+=+tan%28x%29+%2B+x%28sec%5E2%28x%29%29