Question: how to solve this equation?

November 12 2012 maple fan 95
Maple 13

3

> restart;
> F := Int(sqrt((2.138+0.3e-2*exp((4.2^2-z^2)/d^2))^2-2.141^2), z = 0 .. 4.2) = .5;

I have used the fsolve command, it seems like there is a problem.

thank you in advance.

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