(e^(sqrtx)-1)/8 = 1/2
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i guess:
e^(sqrtx)-1 = 4
e^(sqrtx) = 5
take ln for both sides
ln( e^(sqrtx) ) = ln5
(sqrtx)* ln e = ln5
(sqrtx) = ln5
square both sides
x = 2ln5
e^(sqrtx)-1 = 4
e^(sqrtx) = 5
take ln for both sides
ln( e^(sqrtx) ) = ln5
(sqrtx)* ln e = ln5
(sqrtx) = ln5
square both sides
x = 2ln5