Math Is Fun Forum

I don't know better method, but here how I solve this:

,so we can proof it only for positive x and y and xy is positive so we can sqrt() it:

, but

but

and

, so

and

Now i'll be VII
white

"Message sent and received ... that's nice!"
Yes, that's something very VERY nice!

OK. You have to reduce your strategy only a little to give 9.5 survivours.

It's pretty late answer, but here it is:
"Yes. Yes we CAN READ this. But we CAN'T UNDERSTAND it... i think...

I am seeing my avatar whitout any hat!
I can't understand the problem at all. But i'll try:
So if x is number of workers that are working only I process, y-second, z-third, then
x+y+z<=12
For 4 weeks thet must be producted equal mass from all the products,so
4(40.0,5.x)=4(40.1.y)=4(40.0,25.z)
∴
x=2z
y=4z

But x,y and z are natural, so 7z<=12; and z should be 1.
Hm, interesting. Here we don't have to use operational theory.
Is my answer correct?
{2,4,1}

OK. First try to myltiply one point with coordinates {x,y}.
What will happen?
The answer is {ix,iy}. So?

And for the WebMathematica timeout error:
Just the simplification in Mathematica is limited to 300 seconds

But let

v=ai+bj
(here i is vector, not (-1)^(1/2)! (-1)^(1/2) must be italic i)

OK. Let the vector be 2D.