Hello there, Im a little stuck on this: e^2x + e^x - 2 = 0 it says hint use e^2x = ((e^x)^2) im meant to get 0 but i get 0.23... can you help?
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Originally Posted by darksupernova Hello there, Im a little stuck on this: e^2x + e^x - 2 = 0 it says hint use e^2x = ((e^x)^2) im meant to get 0 but i get 0.23... can you help? . You have a quadratic equation in . So let so that the equation looks like So or . Therefore or . But since for all , that means that only the second case is possible. So .
i didnt spot that! Thanks very much!
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