when i was plotting i reveived this error, please help me out....

The following error was reported evaluating the function in FunctionLine update: Not enough input arguments.

fun = @(x) exp(-x) - 3.*x.^2 + 26
fplot(fun,[0 5])
grid on

[C B]

I am not able to recreate the error,

what matlab version are you using?

[SAI ARJUNKUMAR KADALI]

I am using online version of MATLAB

[Cris LaPierre]

I can only recreate the error in MATLAB Online if I modify your code so that the fun does not use x in the equation. Otherwise your code works fine. Perhaps you use fplot somewhere else in your code. Have you shared all your code?

fun = @(x) exp - 3.^2 + 26;
fplot(fun,[0 5])
grid on

Warning: Error updating FunctionLine.

The following error was reported evaluating the function in FunctionLine update: Not enough input arguments.

[SAI ARJUNKUMAR KADALI]

Yes I shared all the code

Answer 1

[Jan]

For me it works:

fun = @(x) exp(-x) - 3.*x.^2 + 26

fun = function_handle with value:
    @(x)exp(-x)-3.*x.^2+26

fplot(fun,[0 5])
grid on

So if this fails for you, you are running another code. maybe you have redefined exp()?