For Loop answer into a vector

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Micheá McDonagh
Micheá McDonagh 2021-9-29
回答： Dave B 2021-9-29
See my code below. I want to run a for loop that will loop through the eqn y 20 times with the value of x that is gotten from the linspace.
Then i want to save each value of y from the loop, into a vector. Can someone help me please. Hope that makes sense.
clc, clear all, close all
b = 10;
d = 10;
E = 207E9;
p = -8000;
I = (b*d^3)/12;
l = 227;
x = linspace(1,226,20);
for i = 1:length(x)
y = (p*x^2*(3*l-x)/(6*E*I))
end
  1 个评论
David Hill
David Hill 2021-9-29
b = 10;
d = 10;
E = 207E9;
p = -8000;
I = (b*d^3)/12;
l = 227;
x = linspace(1,226,20);
y = (p.*(x.^2).*(3*l-x)./(6*E*I));

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采纳的回答

Dave B
Dave B 2021-9-29
Ran in:
b = 10;
d = 10;
E = 207E9;
p = -8000;
I = (b*d^3)/12;
l = 227;
x = linspace(1,226,20);
% not necessary, but good:
y = nan(size(x));
for i = 1:length(x)
y(i) = (p*x(i)^2*(3*l-x(i))/(6*E*I));
end
disp(y)
1.0e-03 * -0.0000 -0.0009 -0.0031 -0.0066 -0.0114 -0.0174 -0.0244 -0.0325 -0.0415 -0.0513 -0.0619 -0.0732 -0.0851 -0.0976 -0.1106 -0.1239 -0.1376 -0.1514 -0.1655 -0.1796
% But you didn't need the for loop, you should just do it the MATLAB way!
y = (p.*x.^2.*(3*l-x)/(6*E*I));
disp(y)
1.0e-03 * -0.0000 -0.0009 -0.0031 -0.0066 -0.0114 -0.0174 -0.0244 -0.0325 -0.0415 -0.0513 -0.0619 -0.0732 -0.0851 -0.0976 -0.1106 -0.1239 -0.1376 -0.1514 -0.1655 -0.1796

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