Level:
Project ID:
2010013905
Source Problem:
Accepted:
0
Clonable:
1
Easy:
0
Suppose a function is concave down on the interval \([-1;2]\). Which one of the offered functions has that property?
\(g(x)=\sqrt{-2x+8}\)
\(f(x)=\frac{-x+2}{(x+3)^2}\)
\(h(x)=\frac{x^2-1}{x}\)
\(k(x)=\frac12x^3+3x^2-x+2\)