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# C3 Quick Question watch

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1. Just been doing this paper
http://www.mei.org.uk/files/papers/c305ju_dskjtr.pdf

Was wondering how you do Q8 i)

Curve y = xsin3x crosses x axis at P.
Find the x co-ordinate of P.

So I made it = 0
Then I had no idea what to do next!

Its probably ridiculously simple but I can't work it out from the mark scheme.
Help would be much appreciated
2. (Original post by jo7777)
Just been doing this paper
http://www.mei.org.uk/files/papers/c305ju_dskjtr.pdf

Was wondering how you do Q8 i)

Curve y = xsin3x crosses x axis at P.
Find the x co-ordinate of P.

So I made it = 0
Then I had no idea what to do next!

Its probably ridiculously simple but I can't work it out from the mark scheme.
Help would be much appreciated
Solve and note that from the diagram.

Spoiler:
Show
You are looking for the first non-zero solution to sin 3x = 0
3. (Original post by Mr M)
Solve and note that from the diagram.

Spoiler:
Show
You are looking for the first non-zero solution to sin 3x = 0
Ah! Ok I was trying to make it more complicated than it actually is. Thanks.

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