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# C4 Edexcel Question Watch

1. Hey guys, i need help with Exercise 6L question 2 any help would be much appreciated ive added a picture, thanks.
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2. the 1st equation says 'x=' btw sorry about the light
3. (Original post by jack___)
the 1st equation says 'x=' btw sorry about the light
First of all, for part (a)

by the chain rule.
4. (Original post by Indeterminate)
First of all, for part (a)

by the chain rule.
I'd recommend
5. Thanks guys, sorry i didnt make it clear i really need help with question b) & c)
6. bump
7. (Original post by jack___)
Thanks guys, sorry i didnt make it clear i really need help with question b) & c)
find the points where the equation of the tangent intersects that of the curve, set y=y and solve - this will give you two points, one is where the line is a tangent the other is Q.

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