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OpenStudy (anonymous):
Math proof. Please help!
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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
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OpenStudy (dan815):
looks very similar to this identity |dw:1430085663319:dw|
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