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[" If "f(x)={[(8^(x)-4^(x)-2^(x)+1)/(x^(2)),,x>0],[e^(x)sin x+pi x+lambda ln4,,x<=0],[" is continuous at "x=0," then the value of "lambda" is "]],[[" (1) "4log_(e)2," (2) "2log_(e)2],[" (3) "log_(e)2," (4) none of these "]]

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