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Mathematics 7 Online
OpenStudy (trisarahtops):

Calc HELP!!! medal!!

OpenStudy (trisarahtops):

@jim_thompson5910

OpenStudy (trisarahtops):

@xGuardians

jimthompson5910 (jim_thompson5910):

please post the full problem

OpenStudy (trisarahtops):

jimthompson5910 (jim_thompson5910):

were you able to graph what you're given?

OpenStudy (trisarahtops):

you mean graph all the curves?

OpenStudy (trisarahtops):

yes I did

OpenStudy (trisarahtops):

jimthompson5910 (jim_thompson5910):

you should get this

jimthompson5910 (jim_thompson5910):

the region you want is in purple

jimthompson5910 (jim_thompson5910):

the antiderivative of arcsine is a bit of a pain to deal with but you can do this y = arcsin(x/6) sin(y) = x/6 x = 6*sin(y)

jimthompson5910 (jim_thompson5910):

the antiderivative of sine is much easier to deal with compared to arcsine. So I'd use that trick above and then integrate with respect to y

OpenStudy (trisarahtops):

so i integrate 6*sin(y)??

jimthompson5910 (jim_thompson5910):

you would need to compute \[\Large \int_{0}^{\pi/2}\left[6 - 6*\sin(y)\right]dy\]

jimthompson5910 (jim_thompson5910):

The reason for the subtraction is we want to kick out the light blue region

OpenStudy (trisarahtops):

i got 3(pi-2)

OpenStudy (trisarahtops):

is this right

jimthompson5910 (jim_thompson5910):

yes or 3pi-6

OpenStudy (trisarahtops):

are there any futher steps?

jimthompson5910 (jim_thompson5910):

nope

OpenStudy (trisarahtops):

thanks

jimthompson5910 (jim_thompson5910):

btw this is what everything looks like when you swap x and y. You'll have things reflect

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