invalid use of operator

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Jong Hyun Lee
Jong Hyun Lee 2021-1-24
评论： Pratikansh 2022-8-8
ro=10;
ri=30;
t=0:0.1:1500;
ci=0.5
c_L=(ci*ri)/ro.*(1-exp(1).^((-ro.*t/.((ri-ro).*t+1500))));
plot(t,c_L)
MATLAB said it is [Error: File: test.m Line: 5 Column: 37
Invalid use of operator.]
I was trying to express equation
What can I do?

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回答（1 个）

Alan Stevens
Alan Stevens 2021-1-24
c_L=(ci*ri)/ro.*(1-exp(1).^((-ro.*t/.((ri-ro).*t+1500))));
should be
c_L=(ci*ri)/ro.*(1-exp(1).^((-ro.*t./((ri-ro).*t+1500))));
| You have /. instead of ./
  3 个评论
显示 1更早的评论
John D'Errico
John D'Errico 2021-1-24
In fact, MATLAB TRIED to tell you exactly where the problem lies.
c_L=(ci*ri)/ro.*(1-exp(1).^((-ro.*t/.((ri-ro).*t+1500))));
↑
Error: Invalid use of operator.
See that the red arrow points to the . in that line. It found something that made no sense. The error messages in MATLAB do try to be helpful where that is possible.
Pratikansh
Pratikansh 2022-8-8
THANK YOU SO MUCCHHH

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