uno mas problemo, senor profesor
x+2y= 4
y^2- xy= 7
uno mas problemo, senor profesor
x+2y= 4
y^2- xy= 7
do this one yourself or you'll never learn and fail all your exams and have to take a job working voluntary for a sex education scheme for the council.
Originally posted by Lamsey+15 March 2004 - 03:44--></div><table border='0' align='center' width='95%' cellpadding='3' cellspacing='1'><tr><td>QUOTE (Lamsey @ 15 March 2004 - 03:44)</td></tr><tr><td id='QUOTE'> <!--QuoteBegin-4play@15 March 2004 - 01:40
a masters hey, /me adds your email to my list of people i can bug for help.
No, I'm doing... um... a PhD in History of Turnips, that's it! [/b][/quote]
At a Poly
Hey Legolas that's some basic stuff, just follow what Lamsey did, if you keep asking for the solutions you won't learn anything.
Gawd damn it, I was just about to go to bedOriginally posted by Legolas@15 March 2004 - 01:51
uno mas problemo, senor profesor
x+2y= 4
y^2- xy= 7
Ok...
x + 2y = 4
so
x = 4 - 2y
so
y^2 - xy = 7
is
y^2 - y(4 - 2y) = 7
which is
y^2 - 4y + 2y^2 = 7
which is
3y^2 - 4y - 7 = 0
which is
(3y - 7)(y + 1) = 0
so
y = 7/3 or y = -1
so
when y = 7/3, x = (4 - 14/3) = -2/3
when y = -1, x = (4 - -2) = 6
so answers are (-2/3, 7/3) and (6, -1)
No more, I'm off to bed. Do the rest yourself
Give a man a fish...
Excellent point.Originally posted by Nimdock@15 March 2004 - 04:00
Give a man a fish...
he's gonna want a boat....Originally posted by Nimdock@14 March 2004 - 18:00
Give a man a fish...
lol thanks for all the help lamsey and others. no more. thanks again
Can't sleep
Ok, so now that this is homework corner, let me ask a question (physics, not maths):
"1 litre of water is heated from 20 degrees celsius until it has boiled and completely evaporated. The steam then condenses onto a second surface at 20 degrees celsius. How much energy has been transferred from the first surface to the second?"
Now, the way I'm thinking, it's just gonna be the specific heat needed to cool the water from 100 degrees celsius down to 20 degrees (i.e. 83600J), plus the latent heat of vapourisation of water (i.e. 2260000J). Any thoughts though people?
On a given day or given circumstance, you think you have a limit.
And you then go for this limit and you touch this limit and you think "Ok, this is the limit".
As soon as you touch this limit, something happens and you suddenly can go a little bit further.
With your mind power, your determination, your instinct and the experience as well, you can fly very high.
- Ayrton Senna, R.I.P.
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