Martinez's Octave Assignment

Evaluating an Integral

To evaluate an integral you must first define the function y = f(x). Follow the simple steps below.

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Example

>function y= f(x)

y= sin(x);

endfunction

># We are trying to integrate x from 0,2.

>area=quad("f",0,2)

area =1.4161

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This example shows $\int _{0}^{2}\sin {x}\,dx$ where the correct answer is 1.4161.