MATLAB: How to solve definite integrals in matlab

g(rel) is a linear shear stress relaxation modulustau has only one dimenssion

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You have the quadgk, integral, et al. functions for numerical integration. If you have access to the symbolic toolbox you and want an analytical solution you might have success with the int function. Check the help-documentation for those and see if they give you what you want.

HTH

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MATLAB: What algorithm is being used by triplequad

When you have questions like this, LOOK AT THE HELP. READ IT! At the command line in MATLAB, try this:

help triplequad
doc triplequad

If you want more information, then

type triplequad

In either case, you will learn that quad is the tool used by default, but that if you prefer, you can also tell it to use other routines like quadl. You can use any quadrature scheme in fact, with only the requirement that it has the same calling sequence as those tools.

%   Q = TRIPLEQUAD(FUN,XMIN,XMAX,YMIN,YMAX,ZMIN,ZMAX,TOL,@QUADL) uses
%   quadrature function QUADL instead of the default QUAD.

Therefore quad is the default. quad is an implementation of an adaptive Simpson quadrature.

MATLAB: Working a definite integral

Read this Definite Integrals of Symbolic Expressions, then you can do

syms x
vpaintegral(1/sqrt(1-x^2)*(x^2+1.1202*x+0.2132),[-1,0])

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MATLAB: What algorithm is being used by triplequad

MATLAB: Working a definite integral

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