Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Topic: plotting integrals
Replies: 4   Last Post: Sep 24, 2013 4:16 AM

 Messages: [ Previous | Next ]
 Itai Seggev Posts: 61 Registered: 7/29/13
Re: plotting integrals
Posted: Sep 21, 2013 4:23 AM

On Fri, Sep 20, 2013 at 07:07:37AM -0400, Herman wrote:
> Dear All,
>
> I would like to plot the function Subscript[\[Eta], B] but I got errors.
>
>
> \[Psi][x_, \[Omega]_] := (\[Omega]/\[Pi])^(1/4)
> Exp[-1/2 \[Omega] x^2]
>
> \[Psi]1[x_, a_, n_] := Sqrt[(2 n)!!/((2 n - 1)!! \[Pi])] Cos [a*x]^n
>
> Subscript[F, TPT][x_, a_, n_] :=
> NIntegrate[\[Psi]1[x, a, n]*\[Psi][x,
> a*Sqrt[2 n (n - 1)]], {x, -\[Pi]/2, \[Pi]/2}]

This definition is self-contradictory. You are say that F_TPT depends on x,
but x is a dummy variable on the RHS.

> Subscript[\[Eta], B][x_, a_,
> n_] := Sqrt[(1 - Subscript[F, TPT][x, a, n])]
>
> Plot[Subscript[\[Eta], B][x, 1, 3], {x, -\[Pi]/2, \[Pi]/2}]
>

--
Itai Seggev
Mathematica Algorithms R&D
217-398-0700

Date Subject Author
9/21/13 Bob Hanlon
9/21/13 Murray Eisenberg
9/21/13 Itai Seggev
9/24/13 Herman