Problema Solution
Let f(x)=5x^-1/3. Under what condition will we have f(x)>0?Why?
Answer provided by our tutors
the condiftion to have f(x)>0 is x>0
because to have f(x)>0
It means f(x)=5x^-1/3>0 => 5^3*x^-1>0 (power 3 2side of the inequation)
so x^-1>0 or x>0