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Variable not saving as a double

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Alice K
Alice K 2023-3-11
评论： Alice K 2023-3-11
Hi All,
I need mutiple values for x for a range of t, it is only keeping the last variable, What do I do?
Here is my code
for t = 0:1:100
x = (0.5exp(2*sin(t)))/(10.5*exp(2*sin(t)));
end
Thank you

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采纳的回答

Torsten
Torsten 2023-3-11
Ran in:
You mean
t = 0:1:100;
x = 0.5*exp(2*sin(t))./(10.5*exp(2*sin(t)));
plot(t,x)
(which is equal to 0.5/10.5=0.04761... because exp(2*sin(t)) cancels out) ?
  3 个评论
显示 1更早的评论
Walter Roberson
Walter Roberson 2023-3-11
Ran in:
You should avoid using the / operator, except possibly for the case of dividing by a literal constant. The / operator is not the division operator: it is the matrix division operator, with A/B being similar to A*pinv(B) or similar to least-squares regression. Use ./ for the division operator
I would suggest to you that in the cases where you really do want to use matrix division or matrix least-squares that instead of A/B that you use (B'\A')' instead -- the use of \ emphasizes the matrix operation.
t = 0:1:100;
u = 1;
v = 1;
A = 0.1
A = 0.1000
x = (A.*exp(u.*sin(t))) ./ (1+A.*exp(u.*sin(t)))
x = 1×101
0.0909 0.1883 0.1989 0.1033 0.0448 0.0369 0.0703 0.1617 0.2119 0.1312 0.0549 0.0355 0.0552 0.1321 0.2122 0.1608 0.0698 0.0368 0.0451 0.1041 0.1995 0.1876 0.0902 0.0411 0.0389 0.0805 0.1765 0.2065 0.1159 0.0490
M = (1+v.*cos(t).*A.*exp(u.*sin(t))+v.*cos(t)-1) ./ (1+A.*exp(u.*sin(t)));
figure
plot(M,x)
Alice K
Alice K 2023-3-11
It Works,
Amazing, Thank you

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