f(x) = x

Not bounded

g(x)=1/x

Not bounded

h(x)=ln x

Not bounded

k(x)=√x

Bounded below

p(x) = x²

Bounded below

q(x) = x³

Not bounded

r(x)= |x|

Bounded below

w(x)=e^x

Not bounded

y(x)= int(x)

Not bounded

d(x) = cos x

Bounded above and below

m(x) = sin x

Bounded above and below

v(x) = 1/(1+e^-x)

Bounded above and below