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Re: Problem with program FEM
Posted:
Sep 16, 2013 11:39 AM


"Ricardo Tamarín" <tamarin_091@hotmail.com> wrote in message news:l162lv$6f4$1@newscl01ah.mathworks.com... > then I don't know how to calculate the integral of the product of > functions in this case, which command do you recommend?
You're doing the opposite of what I called out as a common mistake in this thread:
http://www.mathworks.com/matlabcentral/newsreader/view_thread/170614#911036
In this case, you don't want to pass in the product of the two functions as the first input to QUAD. You want to pass in a function that when evaluated returns the product of the values of the two functions.
f = @(x) x+1; g = @(x) x+2; x = 1:10; y = f(x).*g(x) % returns a vector h = @(x) f(x).*g(x) % returns a function handle h(x) % returns a vector
You don't want to pass y into QUAD. You want to pass h into QUAD, so that QUAD can evaluate h at the values of x QUAD chooses.
 Steve Lord slord@mathworks.com To contact Technical Support use the Contact Us link on http://www.mathworks.com



