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# C4 Maths help needed!!! watch

1. (Original post by JamesDS97)
Doesnt it differentiate like this so no sin2t at this point?

X= √3sin2t

DX/DT = 2√3cos2t
I don't think you actually read my other two posts. That is still correct.
2. (Original post by Mr M)
I don't think you actually read my other two posts. That is still correct.
-4sin2t / 2√3cos2t

2/√3 x tan2t

???
3. The poor typing didn't help in the original question. A scan of the question would have been more helpful.
4. (Original post by JamesDS97)
-4sin2t / 2√3cos2t

2/√3 x tan2t

???
Nearly. Check your signs and rationalise the denominator.

The ambiguous notation is becoming painful.
5. (Original post by Muttley79)
The poor typing didn't help in the original question. A scan of the question would have been more helpful.
Clearly written cos^(2)t
6. (Original post by Mr M)
I don't think you actually read my other two posts. That is still correct.
Couldn't quote your other one :/

-2/3 * √3 * tan2t
7. (Original post by JamesDS97)
Couldn't quote your other one :/

-2/3 * √3 * tan2t
I'm 99.99% certain that is right but it is still ambiguous. If you want to post questions at this level you really should bracket everything in sight or preferably use LaTex.
8. (Original post by Mr M)
I'm 99.99% certain that is right but it is still ambiguous. If you want to post questions at this level you really should bracket everything in sight or preferably use LaTex.
Thanks for the help. Appreciate it.
9. what paper is this question from?

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