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If f(x)=[(8^x-4^x-2^x+1^2)/(x^2\ ),\ x >...

If `f(x)=[(8^x-4^x-2^x+1^2)/(x^2\ ),\ x >0e^xsinx+4x+k ln4,\ xlt=0` is continuous at `x=0,\ ` then find the value of `kdot`

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