[" ii "f(x)=,(sqrt((4x+1)/(1-4x))^(1/20))" for "x!=0],[,=e^(8)quad x-0]

If f(x)={:{(root(3)((4x+1)/(1-4x))", for " x!=0),(e^(6)", for " x=0):} , then at x=0

If f(x)=(e^(2x)-(1+4x)^(1/2))/(ln(1-x^(2))) for x!=0, then f has

f(x)=sqrt((log_(0.4)(x-1))/(x^(2)-2x-8)) Domain =?

If {:(f(x),=((4x+1)/(1-4x))^(1/x),",",x != 0),(,=k, ",",x = 0):} is continuous at x = 0, then k =

If {:(f(x),=((4x+1)/(1-4x))^(1/x),",",x != 0),(,=k, ",",x = 0):} is continuous at x = 0, then k =

If f(x)={:{((e^(1/x)-1)/(e^(1/x)+1)", for " x !=0),(1", for " x=0):} , then f is

Discuss the continuity of f(x) = 0 at x = 0 if f(x) = {{:((sqrt(1 + 4x)- sqrt(1 - 4x))/(sin x)"," ,x != 0),(4, x = 0):}

If f(x)=(e^(1//x)-1)/(e^(1//x)+1)" for "x ne 0, f(0)=0" then at x=0, f(x) is"

If f(x) is continuous at x=0 , where f(x)={:{(((e^(x)-1)^(4))/(sin(x^(2)/k^(2))log(1+ x^(2)/(2)))", for " x!=0),(8", for " x=0):} , then k=