...I am an idiot...(Original post by Mr M)
You don't need to learn how to differentiate to find the maximum or minimum of a quadratic.
Anyway, how would you write all x values that are to the right of (-1, 16)?
Hint: use inequalities.
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AS Maths: What do these questions mean? watch
- Thread Starter
- 02-10-2010 22:02
(Original post by ziedj)
- 02-10-2010 22:03
Both myself and Mr M have explained not only how to solve the question using completing the square (meaning differentiation not required), but also explained part iii as well. (Well, his was more of an explanation, mine was more of an "it's obvious, draw a graph" type thing )
- Community Assistant
- 02-10-2010 22:07
- 02-10-2010 22:23
On a side note could you check the Q in http://www.thestudentroom.co.uk/show....php?t=1426073