MATLAB Answers

For loop only outputting the final value.

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Eris Rusnac
Eris Rusnac on 21 Mar 2021
Answered: Walter Roberson on 21 Mar 2021
function y = q2(t)
if 0 > t;
y = t*sin(2*t)+sin(40+t);
elseif 0 <= t & t <= 100;
y = t*(t-1.6*sin(25*t));
elseif 100 < t;
y = 2*cos(t)+sin(2*t)*cos(40*t)+t;
end
end
t=linspace(0,3*pi,100)
for t=linspace(0,3*pi,100);
y = q2(t);
valueOfA(t) = y;
end

Answers (3)

Cris LaPierre
Cris LaPierre on 21 Mar 2021
This is because you have not formatted your for loop counter correcty, and because your code replaces the value of y in each loop.
See the examples in the documentation page for capturing all the values. You might also find Ch 13 of MATLAB Onramp helpful.

Rafael Hernandez-Walls
Rafael Hernandez-Walls on 21 Mar 2021
Try using something like this:
t=linspace(0,3*pi,100)
t=linspace(0,3*pi,100);
for k=1:length(t)
y = q2(t(k));
valueOfA(k) = y;
end
valueOfA

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R2019b

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