Skip to content / Đến nội dung
ThichHocToan.com

SMO 2014 Senior Round 1 Question 10

SMO · SMO 2014 Senior Round 1

Question 10

If $f(x)=\dfrac1x-\dfrac4{\sqrt x}+3$ where $\dfrac1{16}\le x\le1$, find the range of $f(x)$.
  1. $-2\le f(x)\le4$
  2. $-1\le f(x)\le3$
  3. $0\le f(x)\le3$
  4. $-1\le f(x)\le4$
  5. None of the above