i did the integration by parts first: need help from this point
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First, set , then the integration by parts process won't be so tedious.
After this, a trig. substitution would work with the remaining integral.
RE: I haven't worked much with trig sub. At this time I would probably go for a table/manual...
Hello, viet! i did the integration by parts first: . Good! We have: . . . Let: . . The integral becomes: . . . . . . . Back-substitute: . We have: . . . . . Now evaluate . . . . .
Let's set The integral becomes to Now let and , this yields That's my contribution
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