How to Specify an Interval in Mathematica for the Integrate Function?

[BCox]

Hello:

I would like to use Mathematica Integrate function. But how do I specify the following interval

(0 , Pi/2 ]

?

When I write

L \[Element] (0, Pi/2]

It simply bolds ( and ] in orange in error.

How do I get Mathematica to recognize that for the integrand, my value L is in (0, Pi/2]?

 

[gabbagabbahey]

Try this:

Assuming[{L>0&&L<=pi/2},Integrate[...]]

 

[elduderino]

i don't understand how including 0 in your integration would change the answer anyhow.. its an integration!

 

[gabbagabbahey]

i don't understand how including 0 in your integration would change the answer anyhow.. its an integration!

I don't think he is integrating over $L$. I think $L$ is a parameter that occurs in the integrand, and its value affects whether the integral converges, and to which value.

A simple example is the integral

[tex]\int_0^{\infty}e^{-kx}dx[/itex]<br /> <br /> which only converges for $k>0$[/tex]

 

[BCox]

I don't think he is integrating over $L$. I think $L$ is a parameter that occurs in the integrand, and its value affects whether the integral converges, and to which value.

A simple example is the integral

[tex]\int_0^{\infty}e^{-kx}dx[/itex]<br /> <br /> which only converges for $k>0$[/tex]

$$<br /> Yes, exactly. L pertains to the integrand.$$