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Mathematics 21 Online
OpenStudy (chris215):

.

OpenStudy (anonymous):

you need a picture? will help with the bounds

OpenStudy (anonymous):

http://www.wolframalpha.com/input/?i=x^2,y%3D2-x

OpenStudy (anonymous):

you can see that \(y=x-2\) is larger than \(x^2\) on that region, so you will have \[\int _a^b(2-x-x^2)dx\]

OpenStudy (anonymous):

the limits of integration is where they intersect

OpenStudy (chris215):

thank you!! so the inetgral 0 to 2

OpenStudy (anonymous):

oh no

OpenStudy (anonymous):

the meet up where \[x^2=2-x\]

OpenStudy (anonymous):

|dw:1460082458606:dw|

OpenStudy (chris215):

the integral 2 to 0 of (2−x) -x^2dx

OpenStudy (anonymous):

no

OpenStudy (anonymous):

you have to solve \[x^2=2-x\] to see where they meet

OpenStudy (chris215):

ohhh -2 and 1

OpenStudy (anonymous):

yes, those

OpenStudy (chris215):

the integral 0 to 1 x^2dx- the integral 1 to 2 (2-x)dx

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