Error with plotting my function

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Ethan Bales
Ethan Bales 2021-9-18
评论： Star Strider 2021-9-18
Having issues getting my nonlinear function to plot.
f = @(x) 2.^x-5*x+2; %Given Function
xaxis = [0:0.5:2]; %x-axis
plot(xaxis,f) %plotting function //DOESN'T WORK
  2 个评论
Jan
Jan 2021-9-18
"Doesn't work" does not explain the problem. You get an error message:
Error using plot
Invalid data argument.
This is an important hint. The 2nd input is a function handle, but Matlab expect numerical values.
For a solution see Star Strider's answer.
Ethan Bales
Ethan Bales 2021-9-18
yeah sorry about that. This is my first time using a forum like this and I'm still relatively new to coding. Thanks for insight!

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采纳的回答

Star Strider
Star Strider 2021-9-18
Ran in:
It works if you give ‘f’ a vector to work with —
f = @(x) 2.^x-5*x+2; %Given Function
xaxis = [0:0.5:2]; %x-axis
plot(xaxis,f(xaxis)) %plotting function //DOESN'T WORK —> YEs, IT DOES!
Experiment to get different results.
.

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