Level:
Project ID:
2010013906
Source Problem:
Accepted:
0
Clonable:
1
Easy:
0
Suppose a function is convex up on the interval \([-2;1]\). Which one of the offered functions has that property?
\(h(x)=-\sqrt{x+5}\)
\(f(x)=\frac{x-2}{(x+5)^2}\)
\(g(x)=\frac{x^2-2}{2x}\)
\(k(x)=-\frac15x^3-2x^2+x+1\)