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09-05-2010
04:10 PM

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09-05-2010
04:10 PM

Integration

Please look at the attached and tell me why the two yellow expressions should not evalaute to the same reult

4 REPLIES 4

09-05-2010
04:15 PM

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09-05-2010
04:15 PM

Have changed it a little look at the attached.

Mike

09-05-2010
04:23 PM

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09-05-2010
04:23 PM

Your two expressions are not equal. The integral of a constant is NOT just that constant; it's that constant multipled by the variable of integration evaluate at the limits of definite integral. If you multiply your constant that you pulled out, in the first expression, by pi/4, you'll get the same numerical answer.

BTW, you should be using the numerical processor, and not the symbolic processor for definite integrals with numerics limits.

TTFN,

Eden

09-05-2010
04:49 PM

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09-05-2010
04:49 PM

Forgot my calculus - thanks

09-05-2010
04:52 PM

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09-05-2010
04:52 PM

The integration of F*r w.r.t theta is NOT F*r, it is F*r times theat evaluated at the integration endpoints. Forgot my calculus