Re: what is the solution

On Tue, 14 Feb 2006 22:32:00 +0100, "Lasse" <Lars.Kalsen@xxxxxxxx>
wrote:

Hi all you gurus,

Just to clear it up.

I use sqr(x) as x*x - so the equation is:

(1+x)sqrt(1-x*x)=1

The should be two real solutions. One is easy seen as x=0 - but what is the
other?

Greetings from Denmark

Lasse


In a previous post, BSK posted the solution

x = 0.83928675521416113...

I have it as being

x = -2/3 + (1/3) cuberoot( 19 + 3 sqrt(33) )
+ (1/3) cuberoot( 19 - 3 sqrt(33) )

.

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