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i want to plot an log function

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hassan elkholy
hassan elkholy 2020-12-12
回答： VBBV 2020-12-12
i want to plot this equation
y=(r^3) ln (1/r)
and i use the following code
r = 0.01:0.001:1;
y = (r^3)*log(1/r);
plot(r,y)
can you help me to plot it, because this code has error?
error is
Error using /
Matrix dimensions must agree.

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回答（1 个）

VBBV
VBBV 2020-12-12
%true
r = 0.01:0.001:1;
y = (r.^3).*log(1./r); %element wise
plot(r,y);grid on

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