help with numerical integration

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andrea84 2013-1-23

关闭： MATLAB Answer Bot 2021-8-20

I have the x and y coordinate of the points belonging to a curve and I am not able to figure out how to solve this two integrals:

\int\limits_0^{s_1} ty \, ds_1

and

\int\limits_0^{s_1} tx \, ds_1

Note: t in a known scalar, the two integrals are written in latex code to avoid misunderstanding

Roger Stafford 2013-1-23

Please define the "ds_1" variable - or is it just "ds"? Do you mean arc-length?

andrea84 2013-1-24

You are right, ds_1 can be replaced by d_s.

For example if x=linspace(0,2,100) and y=zeros(size(x)) you will get:

0<=s<=2

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