Ask
your own question, for FREE!

MIT 18.01 Single Variable Calculus (OCW)
22 Online

OpenStudy (anonymous):

how guys, can someone show me how to integrate xcos(x^2+1) if possible?

Still Need Help?

Join the QuestionCove community and study together with friends!

OpenStudy (anonymous):

Use a substitution: Is there part of the integral that can be tweaked into being the derivative of another part? For instance, look at the inside portion of the cosine: \[x^2+1\]Notice how the derivative of that would be 2x? That's almost exactly what you see in the part of the equation before the cosine...so the suggestion is to rewrite the integral with the substitution of \[u=x^2+1, du=2x dx\] It should then become an elementary integration of cosine.

OpenStudy (anonymous):

Go here http://www.wolframalpha.com/input/?i=integrate+xcos%28x^2%2B1%29 and click "show steps"

OpenStudy (anonymous):

put t=x^2 +1;dt/dx=2x;Integral=\[\int\limits_{?}^{?}(1/2)\cos(t)dt=(1/2)sint=(1/2)\sin(x^2+1)\]

Can't find your answer?
Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!

Join our real-time social learning platform and learn together with your friends!

Latest Questions

Bounty:
Let me out.... I'm trapped is anyone there I'm trapped I've tried to adapt but I

9 hours ago
5 Replies
2 Medals

Ashlynisback:
why does question cove always get mad at my post like I asked what 1+1 is and It

11 hours ago
8 Replies
3 Medals

toga:
what religion are you and what are the rules that you must follow

10 hours ago
55 Replies
4 Medals

balencichronicals:
https://www.secretmsg.link/secret/6647b7c9a865c/ dont be weird .

14 hours ago
0 Replies
0 Medals