A-Level Edexcel C3 January 2009 Q1(a) : ExamSolutions

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@chrisbceltics Meant to say the chain rule

ExamSolutions_Maths
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At around 4:42 where you input 2 as the x value, inside the bracket where (5x-1)^1/2... 9 to the power of 1/2 is actually +3 or -3. Why take the positive square root and not the negative one?

unknowndarkskins
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5:19 'cos theta or the quadrant method'

chrisbceltics
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lol, my working out was ridiculusly messy

iamsopoor
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Hm I wonder why I got it wrong and just realised I did 2*5=20 oh dear

superandy