A superadditive function f(⋅) satisfies the following property:\(f\left( {{x_1} + {x_2}} \right) \ge f\left( {{x_1}} \right) + f\left( {{x_2}} \right)\)Which of the following functions is a superadditive function for x > 1?

A superadditive function f(⋅) satisfies the following property:\(f\l

1.	A superadditive function f(⋅) satisfies the following property:\(f\left( {{x_1} + {x_2}} \right) \ge f\left( {{x_1}} \right) + f\left( {{x_2}} \right)\)Which of the following functions is a superadditive function for x > 1?
A.	ex
B.	√x
C.	1/x
D.	e-x
Answer» B. √x

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A superadditive function f(⋅) satisfies the following property:\(f\left( {{x_1} + {x_2}} \right) \ge f\left( {{x_1}} \right) + f\left( {{x_2}} \right)\)Which of the following functions is a superadditive function for x > 1?

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