Integration

[Joeboy]

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

[MikeArmstrong]

Have changed it a little look at the attached.

Mike

[IRstuff]

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

[Joeboy]

Forgot my calculus - thanks

[Joeboy]

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