Ong Qian Wei's answer to MM's Secondary 4 A Maths Singapore question.
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Use u-substitution e^2x = u to reduce the equation into a cubic equation which is similar to the one you obtained in part 2
Take note e^2x is always greater than 0. So e^2x = 2 is the only possible solution
Cheers!
Take note e^2x is always greater than 0. So e^2x = 2 is the only possible solution
Cheers!
Date Posted:
4 years ago
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