anonymous
  • anonymous
area between y=x^2 -2x -3 and y =3x-3
Mathematics
  • Stacey Warren - Expert brainly.com
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schrodinger
  • schrodinger
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saifoo.khan
  • saifoo.khan
Try graphing.
anonymous
  • anonymous
i did but i don't know how to calculate it
anonymous
  • anonymous
Take the definite integral of one and subtract out the definite integral of the other.

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anonymous
  • anonymous
HINT: Area under curve, Integration.
saifoo.khan
  • saifoo.khan
We integrate using the limits.
anonymous
  • anonymous
Nathan is your Mr Analysis, he might help you :D
anonymous
  • anonymous
LOL the i like the sarcasm fool for math
anonymous
  • anonymous
Hey vitus, long time :D
anonymous
  • anonymous
Set the equations equal to learn where they intersect and which is above the other, then take the definite integral of the lower function subtracted from the higher function, between the limits that you found.
anonymous
  • anonymous
i mean do you have have to split it some how and then integrate
anonymous
  • anonymous
Graphing is a good quick way to learn the limits of integration and which equation is larger.
anonymous
  • anonymous
fine the points of interception, those will be your bounds of integration.
anonymous
  • anonymous
http://www.wolframalpha.com/input/?i=area+between+y%3Dx%5E2+-2x+-3++and+y+%3D3x-3
anonymous
  • anonymous
thats how the graph looks like, how do i account for the are under the graph
saifoo.khan
  • saifoo.khan
|dw:1338596987767:dw|
anonymous
  • anonymous
By looking at that graph you can see that the two functions intersect at x=0 and x=5, so those will be your limits of integration. They also show you that the linear function is above the quadratic function, so you subtract the quadratic function from the linear function, then integrate it from 0 to 5.
anonymous
  • anonymous
OHHHH is that it!!!! LOL SORRY, didn't know why i couldn't see that.
anonymous
  • anonymous
thanks =]

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