# Computing the Definite integral

• April 20th 2009, 11:57 PM
v3ndetta
Computing the Definite integral

5 to 8 1/t^4dt

4 to 5 (x^(1/2)+ 1/(4(x)^(1/2))^2
• April 21st 2009, 12:32 AM
CaptainBlack
Quote:

Originally Posted by v3ndetta

Can you tell us where you are having problems with these?

CB
• April 21st 2009, 12:41 AM
v3ndetta
i just have no idea how to integrate them. and i i figured out the -1/5x, but the other 2 i have no idea
• April 21st 2009, 02:47 AM
mr fantastic
Quote:

Originally Posted by v3ndetta
i just have no idea how to integrate them. and i i figured out the -1/5x, but the other 2 i have no idea

Can you do the first if it's pointed out that $\frac{1}{t^4} = t^{-4} ?$

For the third one, expand and integrate term-by-term.
• April 21st 2009, 03:30 AM
CaptainBlack
Quote:

Originally Posted by v3ndetta
i just have no idea how to integrate them. and i i figured out the -1/5x, but the other 2 i have no idea

Can you do the corresponding indefinite integrals?

CB