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E^(2x) — 3e^x + 2 = 0
Solve for x

2 Answers

3 votes

Final answer:

To solve the equation e^(2x) — 3e^x + 2 = 0 for x, substitute y = e^x, factorize the quadratic equation, and solve for x.

Step-by-step explanation:

To solve the equation e^(2x) — 3e^x + 2 = 0 for x,

  1. Let's make a substitution. Let y = e^x.
  2. Then the equation becomes y^2 - 3y + 2 = 0.
  3. Now we can factorize it as (y - 1)(y - 2) = 0.
  4. So the two possible values of x are x = ln(1) and x = ln(2).
  5. Since ln(1) equals 0, our final solution is x = ln(2).

User Induane
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7.9k points
5 votes
You can essentially treat this equation as a factorable quadratic, with the variable being
e^x:


e^(2x) - 3e^x + 2 = 0

(e^x - 2)(e^x - 1) = 0

e^x = 1, 2

x = \ln 1, \ln 2 = 0, \ln 2
User Adelphus
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6.9k points