Problem with the 2D-plot of a function

Hello everybody,

i tried to plot a function. In it's final form, the only parameter of this function is "x".

When i try to plot this function, i get an error. Can you guys tell me where the problem is?

So lets say this is my function:

Varg_hat =
(1497527781869391849*x^2*exp(2*(-x*exp(-41/10))^(9/5))*exp(-41/5)*(-x*exp(-41/10))^(8  /5))/720575940379279360 + (232324954970675913*x*exp(2*(-x*exp(-41/10))^(9/5))*exp(-41/10)*log(-x*exp(-41    /10))*(-x*exp(-41/10))^(13/5))/720575940379279360

Now i want to plot this, by calculating this function for x-values from lets say 0 to 350 in 0.1-steps.

How can i do this?

I tried for example:

x=0:0.1:350;
plot(x,Varg_hat)

But then Matlab says:

Error using plot
Data must be numeric, datetime, duration or an array convertible to double.

Thank you for taking time to look over my question.

Sincerly, Ronald Singer

Answer 1

[Walter Roberson]

syms x;
Varg_hat = (1497527781869391849*x^2*exp(2*(-x*exp(-41/10))^(9/5))*exp(-41/5)*(-x*exp(-41/10))^(8  /5))/720575940379279360 + (232324954970675913*x*exp(2*(-x*exp(-41/10))^(9/5))*exp(-41/10)*log(-x*exp(-41    /10))*(-x*exp(-41/10))^(13/5))/720575940379279360;
x=0:0.1:350;
y = double(subs(Varg_hat));
plot(x,real(y),'k', x,imag(y),'r')

[Ronald Singer]

Thank you sir.