A problem by ahmed yasser
Level
pending
e^x+3e^-x=4 solve for exact value of X i dont really know the answer so its a fake one.
The answer is 0.
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1 solution
let e^x = y then it becomes y^2 - 4y +3 = 0. It gives y = 1,3. hence x = ln(1) and ln(3) i.e. 0 and 1.0986..