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How can i convert this linear equation into a form which i can use linsolve() function?

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Saadet Sena Egeli 2020-12-26

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回答： Pratyush Roy 2020-12-29

I wrote a code like;

function [a,b]=lin_reg(x,y)

a=0;

b=0;

for i = 1:length(x)

for j = 1:length(y)

a=(y(j)-b)/x(i);

b=y(j)-a*x(i);

end

end

end

But these code didn't help me to pass my tests, so i need an equation which i can use linsolve() function.

Thanks in advance.

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Pratyush Roy 2020-12-29

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Hi,

Assuming that both x and y are arrays of shape 1*n, the following code snippet might be helpful

x_new = [x' ones(n,1)];
coeff = linsolve(x_new,y');

Here coeff is a 1*2 array where

a = coeff(1);
b = coeff(2);

Hope this helps!

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