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0.428 u^2? no clue.

Identify the need for a catalyst in a adding water to ethylene. I cant find it in conquering chem

Me? I'm finished. Dunno about school

Don't understand competition. So if you're in a more competitive environment, you are more likely to do better?

When you square root the tan^2x, you must put +/- on the RHS. There should be 8 answers.

Why does it matter? Prob Trig or something like that

I'm studying prelim maths and english atm and a few important parts in chem. Been learning a lot of hsc maths. Totals to about 2hrs a week.

The k+1 is tricky. Not sure how to do it but I got the 6*2^(n-1) part. This is the difference in t1,t2,t3...

No offence..but maths in focus is brief and concise.

Well done!!!!

Yes. Now that's big. Hint..let u=What are you looking at? and then yea.

Still doesn't work. As x--> infinity, gradient --> infinity. But I think I know what you're looking for. Differentiating the derivative[treating it as a function] and finding it's maximum.

I don't get it. The graph goes negative first then positive.

I remember seeing that question in a 2 unit paper but it was logx instead of e^x

Let u = (x^2-x)

sin3x = sin(2x+x) Then make everything into sinx

6+ln 16 Bottom left side iirc

ya I realised 2mins after I posted. Have a feeling I'm gonna forget in an exam

x+2 = (x^2 -2)^2 x+2 = x^4 -4x^2 + 4 x^4-4x^2 -x +2 = 0 x^2(x^2-4) - x+2 x^2(x+2)(x-2)-(x-2) (x-2)[x^2(x+2) -1] Now focusing on the x^2(x+2) -1 factor.. x^3+ 2x^2 -1 x^3+ x^2 + x^2 -1 x^2(x+1)+ (x+1)(x-1) (x+1)[x^2+ x-1] Rewriting as a whole (x-2)(x+1)(x^2 +x -1)= 0 Lol fucken hell. Now...

I solved it algebraicly. Prob because I squared both sides..