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another prep math
If x is positive, which of the following could be the correct ordering of 1/x, 2x, and x^2 ?
[?]
I. x^2 < 2x < 1/x
II. x^2 < 1/x < 2x
III. 2x< x^2<1/x
(A) None
(B) I only
(C) III only
(D) I and II only
(E) I, II, and III
answer D
恳求思路
** x^2 is x de 平方 |
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