Integration-very simpleneed help fast!

1. Feb 1, 2008

pinkyjoshi65

integration---very simple..need help fast!

how to integrate 6e^-2t

2. Feb 1, 2008

Ben Niehoff

Yes, it is very simple. What's confusing you about it, exactly?

3. Feb 1, 2008

pinkyjoshi65

dont know how to do it..lyke integal of it is 6*-0.5*e^-2t?

4. Feb 1, 2008

Feldoh

Looks right...

5. Feb 1, 2008

pinkyjoshi65

so now suppose i want to put in values for t as 0 and 6..will i get the answer as 2.99?

6. Feb 1, 2008

Ben Niehoff

No, not at all.

Edit: No, wait, maybe. I read it wrong. I assume you know how to use a calculator, though...I don't see what you're asking help with anymore.

7. Feb 1, 2008

(e^-2t)/-3

8. Feb 1, 2008

Feldoh

Yes you will get something like 2.99998

Huh?

9. Feb 1, 2008

transgalactic

aaahhh sorryy its
-3*(e^-2t)

10. Feb 2, 2008

fermio

$$\int 6e^{-2x}dx=6\int e^{-2x}\frac{d(-2x)}{-2}=-3\int e^{-2x}d(-2x)=-3 e^{-2x}+C$$
where $$d(-2x)=-2dx$$
$$dx=\frac{d(-2x)}{-2}$$