## [windows2000] Re: OT - Math Question

• From: "Costanzo, Ray" <RCostanzo@xxxxxxxxxxxxxxxxxxxxx>
• To: <windows2000@xxxxxxxxxxxxx>
• Date: Wed, 29 Nov 2006 15:02:04 -0500

```Nice!!

Ray at work

-----Original Message-----
From: windows2000-bounce@xxxxxxxxxxxxx
[mailto:windows2000-bounce@xxxxxxxxxxxxx] On Behalf Of Mark Lane
Sent: Wednesday, November 29, 2006 2:11 PM
To: windows2000@xxxxxxxxxxxxx
Subject: [windows2000] Re: OT - Math Question

I was a math major in a former life 10+ years.

1/2(e^x + e^-x) = 4
e^x + e^-x = 8
(e^x)^2 + 1 = 8e^x
Let y = e^x such that x = ln(y).
y^2 + 1 = 8y
y^2 - 8y + 1 = 0
Use quadratic formula, which is x = (-b +- sqrt(b^2 - 4ac))/2a, to solve
for y in previous equation.
Then x = ln(y)

-----Original Message-----
From: windows2000-bounce@xxxxxxxxxxxxx
[mailto:windows2000-bounce@xxxxxxxxxxxxx] On Behalf Of Ron Leach
Sent: Wednesday, November 29, 2006 9:24 AM
To: windows2000@xxxxxxxxxxxxx
Subject: [windows2000] Re: OT - Math Question
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