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[" If "ell=lim(x rarr a)(sqrt(3x^(2)+a^(...

[" If "ell=lim_(x rarr a)(sqrt(3x^(2)+a^(2))-sqrt(x^(2)+3a^(2)))/((x-a))" then "],[[" (A) "ell=1AA a in R," (B) "ell=1AA a>0]]

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