Math

Determine the integral by making an appropriate substitution

integral of 8x cuberoot srqt(4x^2-9) dx

let u= 4x^2-9
du= 8x dx

I do not know what to do now

1. 👍
2. 👎
3. 👁
1. The substitution seems correct, but the question is not clear to me.

See response:
http://www.jiskha.com/display.cgi?id=1304200682

1. 👍
2. 👎

Similar Questions

1. calculus integrals

Evaluate the integral by making the given substitution. (Use C for the constant of integration. Remember to use absolute values where appropriate.) integral x^5/x^6-5 dx, u = x6 − 5 I got the answer 1/6ln(x^6-5)+C but it was

2. Calc 1

Evaluate the integral by making the given substitution. (Use C for the constant of integration.) ∫ dt/(1-7)^7, u=1-7t

3. Calculus

If f(x) and g(x) are continuous on [a, b], which one of the following statements is true? ~the integral from a to b of the difference of f of x and g of x, dx equals the integral from a to b of f of x, dx minus the integral from a

4. math

Evaluate the following indefinite integral by using the given substitution to reduce the integral to standard form integral 2(2x+6)^5 dx, u=2x+6

1. Calculus

10) Evaluate the integral by making the given substitution. ∫sec(5x)tan(5x)dx u=5x

2. calc 3

1. Evaluate the given integral by making an appropriate change of variables, where R is the region in the first quadrant bounded by the ellipse 36x^2+25y^2=1. L= double integral R (4sin(144x^2+100y^2) dA. 2. Use the given

3. Calculus

Which of the following integrals cannot be evaluated using a simple substitution? the integral of 1 divided by the quantity x squared plus 1, dx the integral of 1 divided by the quantity x squared plus 1, dx the integral of x

4. Calculus

For the following integral find an appropriate trigonometric substitution of the form x=f(t) to simplify the integral. INT((4x^2-3)^1.5) dx x=?

1. Integration by Parts

integral from 0 to 2pi of isin(t)e^(it)dt. I know my answer should be -pi. **I pull i out because it is a constant. My work: let u=e^(it) du=ie^(it)dt dv=sin(t) v=-cos(t) i integral sin(t)e^(it)dt= -e^(it)cos(t)+i*integral

2. Uni Calculus

After making the appropriate inverse trig substitution x=ag(θ) (where g is a certain trigonometric function), the indefinite integral ∫sin(2θ) dθ is obtained. What integral did we start with?

3. Math

(i) Evaluate integral [ x^3 / (x^2 + 4)^2 ] using trigonometric substitution. (ii) Evaluate integral [ x^3 / (x^2 + 4)^2 ] using regular substitution. (iii) Use a right triangle to check that indeed both answers you obtained in