Question: I have problem to plot this equation!

Hi

I have problem to plot(2D)  some equations that have 3 variables (to obtain one diagram with some curve ).

like this equation

ln(2*s*t+2*s*x*sqrt(t)/sqrt(pi)+x^2)-2*s*(arctan((s+x*sqrt(pi/t))/sqrt(2*pi*s-s^2))-(1/2)*pi)/sqrt(2*pi*s-s^2) = 0

I should plot x v.s t for s=0.01,0.005,0.003,0.002

please  help me to understand how can plot like these equation.

thanks

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