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[" 21.If "lim(x rarr0)((1+a^(3))+8e^(1/x...

[" 21.If "lim_(x rarr0)((1+a^(3))+8e^(1/x))/(1+(1-b^(3))e^(1/x))=2" then "],[[" (a) "a=1,b=2," (b) "a=1,b=-3^(1/3)],[" (c) "a=2,b=3^(1/3)," (d) None of these "]]

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