I tried some of these problems and came up with some answers, but not 100% sure about it, please help me check them. These are what I got: 1. 2. 3. Number 4 I can't solve, can someone help? Thanks
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Originally Posted by nirva I tried some of these problems and came up with some answers, but not 100% sure about it, please help me check them. These are what I got: 1. Observe that is the derivative of suggests that the integral is for some : and differentiating the RHS tells us that so: RonL
Originally Posted by nirva I tried some of these problems and came up with some answers, but not 100% sure about it, please help me check them. ... ... Number 4 I can't solve, can someone help? Thanks Hello, nirva, rewrite your problem to: Remember that cos(x) is the derivative of sin(x). Then use substitution: (For confirmation only: I've got 1/2*sin^2(x) + x) EB
Hello, nirva! Let Substitute: . Back-substitute: . We have: . Let Substitute: . Back-substitute: . Multiply: . We have: . . . In the first integral, let . . Substitute: . Answer: .
Originally Posted by nirva Let, Then, Thus, by substitution theorem, Which is,
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