1. "Mathematica could not find a formula for your integral"...

this is the integral:

what's the logic for starting the integration? what should I see that I don't...?

thanks a lot!

2. Originally Posted by dudinka
this is the integral:

what's the logic for starting the integration? what should I see that I don't...?

thanks a lot!
Try telling Mathematica that $\displaystyle \lambda, ~C$ are real.

(attached you will find what Derive says it is - with the constant of
integration set to 0)

RonL

3. Originally Posted by CaptainBlack
Try telling Mathematica that $\displaystyle \lambda, ~C$ are real.

(attached you will find what Derive says it is - with the constant of
integration set to 0)

RonL
(snort!) I'm proven wrong again!

-Dan

4. Originally Posted by CaptainBlack
Try telling Mathematica that $\displaystyle \lambda, ~C$ are real.

(attached you will find what Derive says it is - with the constant of
integration set to 0)

RonL
thank you!

but could you please tell me how to start solving the integral?
variables change? trigo. functions?

5. Originally Posted by CaptainBlack
Try telling Mathematica that $\displaystyle \lambda, ~C$ are real.

(attached you will find what Derive says it is - with the constant of
integration set to 0)

RonL
In case nobody else has noticed, I note that I missed off a square root in the
integrand.

RonL

6. Originally Posted by dudinka
thank you!

but could you please tell me how to start solving the integral?
variables change? trigo. functions?
First get the L out of under the integral by putting y=x/L.

That won't necessarily help though, because there is no guarantee
that this has a closed form integral in terms of elementary and not
so elementary but known functions.

RonL