Which of the following function is periodic? `sgn(e^-x)x >0`

Which of the following functions are periodic? f(x)={|sgn(x)|,x!=01,x=0

Which of the following function is a periodic function ?f(x)=sin((1)/(x));x!=0

Which of the following function/functions is/are periodic ? (a) sgn(e^(-x)) " x>0 (b) " sinx + |sinx| (c ) min(sinx, |x|) " (d) " (x)/(x)

Which of the following function/functions is/are periodic ? (a) sgn(e^(-x)) " x>0 (b) " sinx + |sinx| (c ) min(sinx, |x|) " (d) " (x)/(x)

Which of the following function/functions is/are periodic ? (a) sgn(e^(-x)) " (b) " sinx + |sinx| (c ) min(sinx, |x|) " (d) " (x)/(x)

Which of the following function/functions is/are periodic ? (a) sgn(e^(-x)) " (b) " sinx + |sinx| (c ) min(sinx, |x|) " (d) " (x)/(x)

Which of the following function/functions is/are periodic ? (a) sgn(e^(-x)) " (b) " sinx + |sinx| (c ) min(sinx, |x|) " (d) " (x)/(x)

Which of the following function is not differentiable at x=0?f(x)=min{x,sin x}f(x)={[0,x>=0x^(2),x<0( c) f(x)=x^(2)sgn(x)

Which of the following function is not differentiable at x=0? f(x)=min{x ,sinx} f(x)={0,xgeq0x^2,x<0 f(x)= x^2 sgn(x)

Which of the following function is not differentiable at x=0? f(x)={(0 ,, xgeq0),(x^2 ,, x<0):} , f(x)=x^2sgn(x)