" 8."f(x)={[(|x|)/(x)," if "x!=0],[0," if "x=0]

If f(x)={:{((x)/(|x|)", for " x!=0),(c", for " x=0):} , then f is

f(x) = {((|x|)/(x)",","if" x ne 0),(0",","if" x= 0):}

If f(x) = {:{(x/(|x|)" for "x != 0 ),(0 " for " x = 0 ):} , find Lim_(x to 0 ) f(x)

f(x) = {{:((|x|)/(x)",",x ne 0),(0",",x = 0):}

Evaluate lim_(xto0)f(x) , where f(x)={{:((|x|)/(x)","xne0),(0","x=0):}

If f(x)=sgn(x)={(|x|)/(x),x!=0,0,x=0 and g(x)=f(f(x)) then at x=0,g(x) is

If f(x) = {:((8^(x)-2^(x))/(k^(x)-1)", if " x != 0 ),(=2", if " x = 0 ):} is continuous at x = 0, then k = ….