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[" If "f(x)" is continuous at "x=0" ,whe...

[" If "f(x)" is continuous at "x=0" ,where "],[f(x)=(8^(x)-2^(x))/(k^(x)-1)," for "x!=0],[=2," for "x=0," then "k" is equal to "],[[" (A) "2," (B) "-2],[" (C) "4," (D) "-4]]

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