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1. ...
2. [QUOTE=MathsAssist;73835600]I'm having trouble understanding why an indices rule "simplification" does not work as I attempted it in regards to this question:

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3. would you simplify (9-x)^2 as 9^2 - x^2 ?
4. ...
5. (Original post by ckfeister)
The chain rule?

u =
y =

Chain rule:
dy/dx = du/dx . dy/du

That's completely wrong. The chain rule is for differentiation. Also yeah op you simplified it wrong.
6. ...
That's completely wrong. The chain rule is for differentiation. Also yeah op you simplified it wrong.
I said the wrong one, meant du thing, thx for saying...
8. Actually yeah I'm fairly sure this is far beyond a core 2 integral, probably a typo. If the whole thing was raised to a positive integer power you could do it.
9. And yeah in terms of the simplifaction (9-x^2) factors into (3+x)^0.5(3-x)^0.5
Actually yeah I'm fairly sure this is far beyond a core 2 integral, probably a typo. If the whole thing was raised to a positive integer power you could do it.
It could be C2 if there was guidance from the question - this is the equation of a circle so using a sketch and you can work it out.
11. (Original post by univ4464)
It could be C2 if there was guidance from the question - this is the equation of a circle so using a sketch and you can work it out.
Ah yes of course circle centered on the origin with radius 3.

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