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Dodo1
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Luigi0210
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Do you know what the graph looks like?

Dodo1
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No, I have no idea!

Luigi0210
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Well it might be a good idea to sketch a graph

Dodo1
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would it possible to solve the problem without a graph?

Dodo1
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would it be

Luigi0210
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Well yes but it be a bit harder since we don't know which graph is higher

Dodo1
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oh i see...
how do you draw a graph

Luigi0210
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wait, are you finding total area or net area?

Dodo1
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it says find the area between the curves?

Luigi0210
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If I'm not mistaken then the graphs should look like this when graphed
dw:1366855841011:dw

Dodo1
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sin and cos graph?

Luigi0210
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Uhm no, the ends of the graph go off into infinity after they have intersected

Dodo1
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Oh.

Luigi0210
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Now, do you notice anything about the two graphs?

Dodo1
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they get smaller and smaller?
they intersects

Luigi0210
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Well yes but also they are reflections of one another

Dodo1
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Yes,

Luigi0210
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So that means that whatever area on graph has the other has the opposite area.
Such as x and x.

Dodo1
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Yes,

Luigi0210
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So that means the area would be zero

Dodo1
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the answer is zero?

Dodo1
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i thought i need more calculations

Luigi0210
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Well you could if you want but the answer would still be zero. These two graphs are going to cancel each others area out

Dodo1
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i entered zero into the answer but it tells me that it was wrong

Luigi0210
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Well let's solve it right now, do you know how to set it up as an integral?

Dodo1
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No, I have no idea!!

Dodo1
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@Luigi0210

Luigi0210
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Sorry I was trying to evaluate the problem

Luigi0210
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but anyways we would set up the problem like this:
\[\int\limits_{0}^{9} (x^314x^2+45x)(x^3+14x^245x) dx\]

Zarkon
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I'm betting that they want you to set up two different integrals...based on the two enclosed regions.

Dodo1
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so between...= minus.
i got it

Luigi0210
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Setting up two equations would take a bit longer


Dodo1
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whats next step?

Luigi0210
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The answer I got was 253/2..

Luigi0210
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*243/2

Dodo1
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the answer was wrong but thanks for ur help!

Luigi0210
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I'm sorry I couldn't help you solve it..

Dodo1
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No thanks for your time!