x Centroid of area between function and x-axis

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Blake White 2020-5-27

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评论： darova 2020-5-27

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I've been given that xC=integral(x*Func)/integral(Func)

Also that when Func is x.^2, a=0, b=1 that xC=0.75

So I know that x*Func will be x.^3

Idk how to make y=x.^3 into a function handle so that B will work

This is where I'm at:

function xCentroid = centroid(Func,a,b)
   A = integral(Func,a,b);
   syms x
   y = simplify (x.*Func)   
   B = integral(y,a,b)
   xCentroid = B/A
end

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darova 2020-5-27

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在 MATLAB Online 中打开

Try this

f = @(x) x.^2;
f1 = @(x) x.*f(x);
A = integral(f,a,b);
B = integral(f1,a,b);
c = B/A;

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Blake White 2020-5-27

Thanks but that only works for the function being x.^2. It needs to be that any function will work so I need to be able to multiply any function by x.