SOLUTION: How do you solve for X in the equation: {{{ lnX + ln(x+3) =1 }}}
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Question 381356: How do you solve for X in the equation:
Found 2 solutions by stanbon, richard1234:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
lnX + ln(x+3) =1
----
ln[x(x+3)] = 1
---
x(x+3) = 10
---
x^2+3x-10 = 0
(x-5)(x+3) = 0
---
Positive solution:
x = 5
========================
Cheers,
Xtan H.
Answer by richard1234(7193) (Show Source): You can put this solution on YOUR website!
Stan, the ln is the logarithm base e, not base 10. Therefore we obtain
which yields a much uglier set of solutions.
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