2006-10-29 07:02:15 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Remember, ln(y) and e^(y) are inverse funtions.
Thus, ln(e^(y)) is equal to just y.
So, x^2=4.
Take the square root of each side, and you have x=+-2.
The answer can also be expressed as x=2 or x=-2.
2006-10-29 07:35:04 · answer #1 · answered by vworldv 2 · 0⤊ 0⤋
ok - 1. i know the answer, it's actually simple. 2. what r u doing posting math q's on the internet? can't u ask a friend or ur parents or something? jeez. hope ur smarter than that, no offense.
2006-10-29 15:06:35 · answer #2 · answered by skigrrl66 3 · 0⤊ 0⤋
ln(e^(x^2)) = 4
x^2 = 4
x = ±2
2006-10-29 15:05:03 · answer #3 · answered by Helmut 7 · 0⤊ 0⤋
e^(x^2) = e^4
x^2 = 4
so x = 2 or x = -2
(and don't worry about skigrrl66 as she is only partially correct!)
2006-10-29 15:04:32 · answer #4 · answered by ? 7 · 0⤊ 0⤋