at least one real solution

[KY]

Let k and K be real numbers for which the equation
x^6 + x^5 + K*x^4 + k*x^3 + K*x^2 + x + 1=0
has at least one real solution.

if and only if ____________.
(condition of k,K)

[Dirk Van de moortel]

if and only if everyone maKes his own homeworK.

Dirk Vdm

[KY]

Let k and K be real numbers for which the equation

x^4 + K*x^3 + k*x^2 +K*x + 1=0

[Tonico]

What isn't clear with Dirk's excellent answer? Pay attention, here's
for you once again:

"If and only if everyone maKes his own homeworK."

Tonio

Ps. Further hint: you can change the K's in the above respond by k's
and it'll work great, too.

[Marc Olschok]

Gehe hinaus in den Sturm,
und spiele mit dessen Ketten.
Im Spiel der Variationen
wird Erleuchtung sich einstellen.

--
Marc

[Chip Eastham]

If k and K are real numbers,

x^4 + K*x^3 + k*x^2 + K*x + 1 = 0
has at least one real solution

<==> |K| + sqr(K^2-4k+8) >= 4.

regards, chip

[Kook spotter]

fuck off, impotent jap faggot.

"KY" <wkfk...@yahoo.co.jp> wrote in message

[Bill Dubuque]

Tonico <Toni...@yahoo.com> wrote:
> On Nov 20, 4:20�pm, KY <wkfkh...@yahoo.co.jp> wrote:
>>
>> Let k and K be real numbers for which the equation
>> x^4 + K*x^3 + k*x^2 +K*x + 1=0
>> has at least one real solution.

>> if and only if ____________ (condition of k,K)

>
> What isn't clear with Dirk's excellent answer? Pay attention,
> here's for you once again:
>
> "If and only if everyone maKes his own homeworK."

I doubt this is homework. Rather KY seems to have recently gained
free access to Mathematica (probably via Wolfram Alpha) and he is
simply generating problems using it. Apparently he's suffering
from the common initial marvel of computer algebra systems, i.e.
admiring them simply for their brute-force.