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Re: Integration - another Integer as a result


Hi Mike,

Mathematica built in functions begin with a capital letter.

So the function for the sine of an angle is Sin[], not sin[].

I think you used a lower case 's' when you input the equation, which mathematica would treat as a new undefined function and so would now know the integral for the new function, sin[]. 

So 

Integrate[2 x Sin[(n Pi x)/L] Sin[(m Pi x)/L)], x]

should do what you want :)

Cheers,
Matt


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