@Carl Love 

Hello Carl,

I have a problem about the integration of a function. The maple returns mathematical form of the given command

the function is

fn :=(-4.079067798*10^(-16)+3.422708023*10^(-16)*I)*(3.363377947*10^(-11)+5.977507284*10^(-12038)*I+(3.363377947*10^(-11)+4.678081798*10^(-22)*I)*erf(1.664331698*10^15*qq-0.2503507367e-1-4.649313602*I)) *exp(-2.77*(qq/(tau*tau))^2)*exp(-I*w0*qq)*exp(-(ss-qq)/T_pop)

qq is the integration variable qq=-inf..ss

w0=10^15

tau=10^(-15)

T_pop=30e-15

Thank you

Regards

@Carl Love 

Thank you again

@Carl Love 

Hello Carl,

I thank you for your help. I really appreciate your help. Have a nice day

Regards

Vishal

@Carl Love 

hello

even after correcting the letters case as you mentioned it still shows the same warning msg

@Carl Love 

Download tst.mw

Thank you very much for the help...

I tried similarly for

 exp(I*(7.500000000*10^14*Pi-1.547600000*10^16+3.333333333*10^14*I)*(4.0*10^(-14)-xx))*exp(-1.000000000*10^28*xx^2)*exp((7.500000000*10^14*I)*Pi*xx)

but it shows the warning msg 

Warning, unable to evaluate the functions to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct

I dont understand why

Regards

Visham

Thank you for the answer

I try to explain my problem a bit more

Consider I have an expression that is a function of x and t which will be calculated for all x(say a range) and for each x for all t (say a range). Thus this expression has complex values for all t at all x which needs to be plotted.