I need help with the u-substituion. The first one is.... (2cosx)/(1-cos^2x)
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Originally Posted by tbenne3 I need help with the u-substituion. The first one is.... (2cosx)/(1-cos^2x) Hint: . Now what is the substitution?
Originally Posted by Chris L T521 Hint: . Now what is the substitution? I really don't know..
Originally Posted by tbenne3 I really don't know.. better brush up on your basic identities ...
Originally Posted by skeeter better brush up on your basic identities ... k thanks
Notice that if then . So .
You can also let , then so then . Now since , then . So we have:
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