Question

MATLAB

y=m/(x^2+bx+c)

x= 1:10;

y=[0.593 0.338 0.216 0.15 0.109 0.084 0.066 0.053 0.044 0.037];

use polyfit to draw a graph

find m,b,c

Answer 1

`Hey,

Note: If you have any queries related to the answer please do comment. I would be very happy to resolve all your queries.

clc

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close all

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x= 1:10;

y=[0.593 0.338 0.216 0.15 0.109 0.084 0.066 0.053 0.044 0.037];

A=[x(:).^2 x(:) ones(numel(x),1)];

b=1./y(:);

C=A\b;

m=1/C(1)

b=C(2)*m

c=C(3)*m

f=@(x) m./(x.^2+b*x+c);

xx=1:0.01:10;

yy=f(xx);

plot(xx,yy,x,y,'o');

xlabel('x');

ylabel('y');

title('Plot of x vs y');

legend('Fit','Data');

Kindly revert for any queries

Thanks.