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Save up some cash and go 7800 GTX. If you want to go that route, wait until January for the mid range 7600 and 7200 to launch. $600 - $700 is a little steep for a non-dedicated gamer. You'd be after something, at max, in the $300-$400 range, and that'll last you a good 3 years if you choose...

That thing is insanely fast. ATi's R580 had better be better than that, or else nVidia will have beaten them to market again with a faster card. I_F

There's no hydrocarbons there. Study up on galvanic cells, the purpose of a salt bridge, electrolytes, and displacement reactions. If it's a first hand investigation, odds on it's the "compare the properties of dry cells and lead-acid cells to two of the following" dot point. You'll have to...

the question is $300 invested for 5 years at 6% p.a. interest paid quaterly Assuming this is $300 invested at the start of every year: P = 300 n = 20 r = 406/400 S = 300(406/40020 + 406/40019 + 406/40018 + ... 406/4001) = 300 x (406/400[406/40020 - 1]) ÷ (6/400) = $7041.16...

If you want to get a GT card later to run SLI, then you'll have to get a GT card now. SLI only works if you have two identical cards. Apart from that, it's a solid bundle that'll run well. :) I_F

nVidia is going by the logic that it's not too expensive if people will buy it. And people will buy it - it's a monster of a card, even at $US649. Tech geeks and overclockers are absolutely drolling right now. As for the next generation, it's looking like Q2 next year: If that roadmap is...

Why not get a 512MB GTX? Clocked at 550/1800 and cheaper too. Cheaper than the 256MB GTX? Reports indicate the 512MB model will be even more expensive than the x1800 XT, at $US649-799 RRP or so. At $US799, it's better value to get two 256MB GTX and run SLI. But leaked tests show that if you...

(x2+4x-4)(x2-4x-4) = x4 - 4x3 - 4x2 + 4x3 - 16x2 - 16x - 4x2 + 16x +16 = x4 - 24x2 + 16. Which does not equal x4-20x2+16. Therefore you get two different results because the substitution given to you is wrong. Or, your first result has to be discarded because it's entirely wrong...

Stupid Norton. Try creating another user account and uninstalling it through that. You could also try nuking the startup process - Start Menu, Run, type in "msconfig", and go to the Startup tab. Find the processes that run out of the Norton Firewall folder (under the "Command" heading, look...

I hate probability, especially perms and combs. There's always some annoying little piece of crap that trips you up and makes you end up 10000 units out. Stupid perms and combs. I_F

I'm not too fussed at the moment because my school's very small - there's only 23 in my year and I'm comfortably rank 1 in all but one of my subjects. I'm aiming for rank 1 in everything except English, and then I can tackle the exams knowing that I have the rank. Probably won't get as good a...

Yep, playboy2enjoy's got that. His solution should solve your MSN problems. I_F

It's up to you, If you feel that by dropping a subject or two, you'll focus more on the others and ergo do well in them, go ahead and drop. Remember though that you should use the extra time to work on your other subjects and ensure that you're strong across the board. I_F

sasquatch, people do things in different ways. Sometimes it's simpler to express a parabola in general form rather than 4ay form. Yes, when you're given a vertex, you would probably be expected to use 4ay form, but general form works just as well - especially if you're not given a vertex or you...

sasquatch, don't be disheartened. You'll pick up polynomial divison just fine I'm sure with a person explaining it to you face to face. It's not that hard a concept when there's someone there to help. To find stationary points, derive the function. When the derivative = 0 for a value of x...

Express the number 0.98765432109876543210 (the digits 9 through to 0 repeating infinitely) as a fraction. Next question: Find any stationary points on the curve f(x) = 3x4 - 7x3 + 2x2 + 5x - 12 and distinguish between them. I_F

Ok your right bout the axis bit, but how does using (x - h)^2 = 4a(y - k) complicate things? Because if your vertex is at the origin, which often it is, all you need is x2 = 4ay or y2 = 4ax. If your parabola has a different vertex, then by all means apply the other formula - it's meant to be...

I'm not sure if the expiration may have affected it. If it's expired (from memory), Norton simply doesn't let you get any updates. When did it expire, btw? Another thing you can try is this: delete Messenger from Norton's Allow list. Restart the computer and do an application scan in Norton -...

What firewall are you using? I_F

From another thread, I found these two molar heats of combustion. It's a start, at least: Methanol 726kJ/mol 1-propanol 2101kJ/mol I_F