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Labelling a plot with maximum

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  • Subject: [mg105146] Labelling a plot with maximum
  • From: Shalin Mehta <shalin.mehta at>
  • Date: Sun, 22 Nov 2009 06:10:35 -0500 (EST)

Hi everyone,

 I am very new to Mathematica. I wish to prepare a figure and a movie
where the maximum of the plot is labelled on the figure.

I am using Manipulate to animate a function as shown below:

jinc[x_] := BesselJ[1, 2 \[Pi] x]/(2 \[Pi] x);
f[x_, \[CapitalDelta]_] :=
  4 Abs[jinc[x + \[CapitalDelta]] - jinc[x - \[CapitalDelta]]]^2;
 Plot[f[x, \[CapitalDelta]], {x, -1.22, 1.22},
  PlotRange -> {{-0.5, 0.5}, {0, 1.5}}], {\[CapitalDelta], 0.125,

I find the maximum for different values of Delta using:
 NMaximize[f[x, \[CapitalDelta]], x], {\[CapitalDelta], 0.125,

Can someone please help with a code that can print the result returned
by NMaximize on (say) top-left of the Plot generated by the first
Manipulate above? The plot will look  neat if I can place a marker at
the X-position of maximum.

Also, I wish to have a Motion-JPEG compressed quicktime mov file
exported from this manipulate. How can that be achieved?

thanks in advance for any help.

mobile: +65-90694182

Bioimaging Lab, Block-E3A, #7-10
Div of Bioengineering, NUS Singapore 117574

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