Posted by **Anonymous ** on Friday, November 30, 2012 at 8:32pm.

Use the substitution x=3tan() to evaluate the indefinite integral 93dx/(x^2sprt(x^2+9))

- Calculus -
**Anonymous **, Friday, November 30, 2012 at 8:36pm
correction: use the substitution x=3tan(theta)

- Calculus -
**Steve**, Saturday, December 1, 2012 at 12:18am
so, try it. where do you get stuck?

- Calculus -
**Anonymous **, Saturday, December 1, 2012 at 12:30am
I'm not sure if this is right but after substituting and simplifying I get to:

integral (93/9tan^2theta*3sectheta)*3sec^2theta dtheta

- Calculus -
**Jason**, Saturday, December 1, 2012 at 1:47am
It took me your trig substitution followed by a u substitution to get 93squrt(x^2+9)/9x+C

## Answer This Question

## Related Questions

- Calc BC - 1. Find the indefinite integral. Indefinite integral tan^3(pix/7)sec^2...
- Calculus :) - Use the substitution x=2tan(theta) to evaluate the indefinite ...
- Business Calculus - Evaluate each indefinite integral. Use the substitution ...
- Calc - Use substitution to evaluate the indefinite integral: The integral of [ (...
- math - Evaluate the following indefinite integral by using the given ...
- math - Evaluate the following indefinite integral by using the given ...
- Calculus AB - Evaluate the indefinite integral of (ln(x))/(x + xln(x)) dx by ...
- Calculus - "Evaluate the following indefinite integrals: "S" (3x^2 -2)/(x^3 - 2x...
- Calculus - Evaluate the integral: 16csc(x) dx from pi/2 to pi (and determine if ...
- Math - 1. Evaluate the indefinite integral ([6x^2 + 12x^(3/2) +4x+9]/sqrt x)dx. ...

More Related Questions