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answers:

1
+1  Q: 

How to implement Trapezoidal method in PHP?

Z = TRAPZ(X,Y) computes the integral of Y with respect to X using the trapezoidal method.

TRAPZ is an existing function in MATLAB, but how to implement it in PHP?

+2  A: 

hey, what about wikipedia? http://en.wikipedia.org/wiki/Trapezoidal_rule here is great explanation and even code samples.

Andrey  2010-06-22 15:38:58

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