Question 12
For real $-3\le x\le3$, find the maximum of $x+\sqrt{9-x^2}$.
HKIMO 2026 THPT (Grades 10–12 shared) National Final (Heat) Set 05 Question 12
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Final (Heat) Set 05
HKIMO · HKIMO 2026 THPT (Grades 10–12 shared) National Final (Heat) Set 05