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Mathematics 13 Online
OpenStudy (anonymous):

Math proof. Please help!

OpenStudy (anonymous):

One minute while I type it up

OpenStudy (anonymous):

Prove, \[\cup_i \in I (A_i and B_i) \subseteq (\cup_i \in I A_i) and (\cup_i \in I B_i) \]

OpenStudy (anonymous):

sorry couldn't find the intersection button in the equation writer

OpenStudy (dan815):

what is the I for

OpenStudy (anonymous):

index

OpenStudy (dan815):

looks very similar to this identity |dw:1430085663319:dw|

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