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06-10-2017
Mathematics

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Look at the image for the question, do not answer unless you are 100% sure!

Look at the image for the question do not answer unless you are 100 sure class=

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choixongdong choixongdong

06-10-2017

A is wrong
B is also wrong
D is wrong because {-1,1} is not including -1 and 1

-1 <= y <= 1 mean [-1, 1 ] so answer is C

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