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**Can you you solve this Integral problem**

Dear Friends

Can youn help me to integrate the follownig formula

L.H.S = Integrate[1-6*Lambda/x*Coth(x/2*Lambda)+12*(Lambda^2/x^2))*x^3*g(x)dx] / Integrate[x^3*g(x)dx]

Where g(x) = a*exp[-0.5/b^2*ln(x/x0)^2] is the distribution function

where a= 51.5801

b=0.9585

x0=5.4073

I like to solve for Lambda, where the L.H.S is determined experimentally

Thank you very much for your cooperation.

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