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January 18th, 2010, 04:08 PM   #1
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Find area

Find the area between the graph of f and the x-axis.



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January 18th, 2010, 04:14 PM   #2
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Re: Find area

Just take the definite integral of f(x) from -2 to -1 (your final answer will be 11/3).
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January 18th, 2010, 04:37 PM   #3
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Re: Find area

Quote:
Originally Posted by Erebos
Just take the definite integral of f(x) from -2 to -1 (your final answer will be 11/3).

I got 4/7 as my final answer, do I need a minus sign in front of the integral, the anti deritavitive I got is
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January 18th, 2010, 05:15 PM   #4
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Re: Find area

well, Wolframalpha gives -11/4 ...
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January 18th, 2010, 05:19 PM   #5
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Re: Find area

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well, Wolframalpha gives -11/4 ...

Can you show me how you got that, what is the anti derivative you got?
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January 18th, 2010, 05:21 PM   #6
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Re: Find area

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January 18th, 2010, 05:25 PM   #7
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Didn't see the above.
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January 19th, 2010, 02:45 AM   #8
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Quote:
Originally Posted by 450081592
do I need a minus sign in front of the integral
The area lies entirely "below" the x-axis, so you should put a minus sign in front of the integral.
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