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# A little P2 revision watch

1. just thought id send a list of stuff u need 2 no 4 edexcel p2 in trig, logs, differentiation n integration. enjoy!
2. http://www.mrhughes.net/files/papers/P2/Mock.pdf

can someone do 6c?
3. and how do you do:

arctanx=1 ?

4. (Original post by TheWolf)
and how do you do:

arctanx=1 ?

i got 2x=sin-1(-1/3)

can u not use the equation for a...sub in 2x for x and subtract one from the other to give 3sin2x=-1??
5. (Original post by TheWolf)
and how do you do:

arctanx=1 ?

arctan x = 1
tan 1 = x/1

As you can see from the picture, x is very small because of the small angle.
If you want the actual value, press shift, tan, 1, equals.
Attached Images

6. (Original post by lgs98jonee)
i got 2x=sin-1(-1/3)

can u not use the equation for a...sub in 2x for x and subtract one from the other to give 3sin2x=-1??

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