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[" ILLUSTRATION1Ifab "in R" such that "a...

[" ILLUSTRATION1Ifab "in R" such that "ab>0," then "sqrt(a)sqrt(b)" is equal to "],[[" (a) "sqrt(|a||b|)," (ii) "-sqrt(|a||b|)],[" (c) "sqrt(ab)," (d) none of these "]]

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