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cox???

sorry,sorry. its cos x

oh lol ^^

Hmm do you remember what the graph for cosine looks like?

somewhat

I'm pretty sure cos(x) = x only has one solution

http://screencast.com/t/sLkE6Ylvzpk

|dw:1351373944681:dw|

So in your picture, x=pi/2
but cosx = 0
Hmm that point doesn't work so well :c

okay, i will consider the picture that you showed

okay,

So which one should I consider now? i have two answers here

oh okay, thank you so much guys

use the intermediate value theorem

roelin i think you did it right