Thursday

February 26, 2015

February 26, 2015

Posted by **Corin** on Sunday, October 7, 2007 at 6:30pm.

int:(x^2+2x+3)/(x^3+3x+9) dx

I think I am supposed to use the rule: int:1/u du=ln|u|+C

But I don't know what to do first.

Thanks for your help! :-)

Oh- and the answer the back of my book gives is (1/3)ln|x^3+3x^2+9x|+C

- AP Calculus -
**bobpursley**, Sunday, October 7, 2007 at 7:03pmThis is an integral in the form of

INT f'(x)/f(x) dx

it integrates to ln |(f(x))|

http://en.wikipedia.org/wiki/Table_of_integrals

- AP Calculus -
**Corin**, Sunday, October 7, 2007 at 10:53pmThanks for your help! :-)

I think I got the answer!

Thanks1

- AP Calculus -

**Answer this Question**

**Related Questions**

Calculus - Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^...

Calculus - Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^...

Calculus - Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x^...

Calculus - Can someone tell me how to do these? Estimate INT from 0 to 1 2/(1+x...

Calculus - Center of Mass - Find the exact coordinates of the centroid given the...

Calculus - int(dx/(x^2+9)) u = x/3 Use the indicated substitution (above) to ...

check my precalc - #1. (3x^3-4x^2-3x+4)/(x^3-5x) my answers: y-int: NONE x-int: ...

Calc. - Find the value of the definite integral using sums, not antiderivatives...

Precalc - #1. (3x^3-4x^2-3x+4)/(x^3-5x) my answers: y-int: NONE x-int: 1, -1, ...

Calc, - Find the value of the definite integral: int= integral sign int((x + 2...