find the area between the graph of $\displaystyle y= 6x^2 - 42x + 60$ and the x-axis, between x=1 and x=4.

any ideas? thank you

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- Nov 11th 2008, 01:38 AMjvignaciofind area integration
find the area between the graph of $\displaystyle y= 6x^2 - 42x + 60$ and the x-axis, between x=1 and x=4.

any ideas? thank you - Nov 11th 2008, 01:45 AMmr fantastic
- Nov 11th 2008, 03:36 AMjvignacio
- Nov 11th 2008, 03:40 AMmr fantastic
If you're studying integral calculus you should know how to draw the graph of a parabola. Especially one whose equation factorises so easily.

I don't know what you mean by absolute integer?

http://www.mathhelpforum.com/math-he...60062b2b-1.gif means take the magnitude of the integral (since the integral itself is negative). - Nov 12th 2008, 04:59 AMjvignacio
- Nov 12th 2008, 11:48 AMmr fantastic
How can an area between the curve and the x-axis be negative?

The answer has to be positive. Did you draw the graph?

It looks like you haven't taken the**magnitude**of $\displaystyle \int_2^4 6x^2 - 42x + 60 \, dx$ like I said to. But without seeing th details of your calculation it's impossible to know for sure what mistakes you have made. - Nov 12th 2008, 12:32 PMjvignacio
- Nov 12th 2008, 01:13 PMmr fantastic