Try

expression(paste(integral(),"f(",tau,") d",tau,sep="")))

it works for me.

-tgs

On Mon, Oct 4, 2010 at 9:25 AM, Czerminski, Ryszard <
Ryszard.Czerminski@astrazeneca.com> wrote:

> I would like to use greek "tau" as a symbol of variable to integrate
> over in plotmath
>
> expression(integral(f(tau)*dtau, 0,t))
>
> but nothing seems to work. I tried d{\tau}, d\tau, etc.,
> without any success
>
> Is it possible? How can I accomplish this?
>
> Best regards,
> Ryszard
>
>
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