How do I calculate the coefficients C in this function while P and T are given?

1 view (last 30 days)
Zifeng Qiu
Zifeng Qiu on 19 Jul 2020
Answered: Rafael Hernandez-Walls on 19 Jul 2020
T=[4:4:24]';
P=[1e-4;2.5e-4;6e-4;1e-3;1.6e-3;2.25e-3];
plot(T,P)
%find C with the given vectors

Sign in to answer this question.

Accepted Answer

Rafael Hernandez-Walls
Rafael Hernandez-Walls on 19 Jul 2020
You can use this equations:
T=[4:4:24]';
P=[1e-4;2.5e-4;6e-4;1e-3;1.6e-3;2.25e-3];
plot(T,P,'o')
n=length(P);
A=[ones(n,1) T T.^2];
C=inv(A'*A)*A'*P;
P2=C(1)+C(2)*T+C(3)*T.^2;
hold on
plot(T,P2)

More Answers (0)

Categories

Find more on Ordinary Differential Equations in Help Center and File Exchange

Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!