Integrating 2 symbolic functions w.r.t. a single variable

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Shan  Chu
Shan Chu am 14 Feb. 2017
Kommentiert: Steven Lord am 14 Feb. 2017
Hi, I would like to know if there is a way to integrate a multiplication of 2 symbolic functions with respect to a single variable. For example:
mu_0 = 4.*pi.*1e-7;
ep_0 = 8.854e-12;
mu_r = 1;
ep_r = 1;
mu=mu_0*mu_r;
ep=ep_0*ep_r;
f = 0.159e9;
omega = 2.*pi.*f;
sig1=0;
sig3=10;
gamma0=@(x) sqrt(x.^2-omega^2*mu*ep+1i*omega*mu*sig1);
gamma3=@(x) sqrt(x.^2-omega^2*mu*ep+1i*omega*mu*sig3);
F_A_Z=@(x) gamma0*gamma3;
A_Z=mu*integral(F_A_Z,0,Inf,'RelTol',1e-6,'AbsTol',1e-12,'ArrayValued',true);
Then Matlab said Undefined operator '*' for input arguments of type 'function_handle'. Could you pleas help?
Thanks

Akzeptierte Antwort

Torsten
Torsten am 14 Feb. 2017
F_A_Z=@(x) gamma0(x).*gamma3(x);
Best wishes
Torsten.
  1 Kommentar
Steven Lord
Steven Lord am 14 Feb. 2017
You can't multiply function handles.
You can multiply the results of evaluating function handles.

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