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ln((x^2+1)/(1-x^2))
x^2*(1-m)-(x*(4*m-4))-(3*m)+5 = 0;x
x
x^2*(1-m)-(x*(4*m-4))-(3*m)+5 = 0;m
m
2*(2*x-3)+3*(4-x) = -(x+1);x
x
2*(1/4)-(3*(1/2))-6
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