每日一题

Mathematics>Standard Multiple Choice

Read the following SAT test question and then click on a button to select your answer.

If x^(1/3) = y^2, which of the following must be equivalent to x?

(A) y^(1/6)
(B) y^(2/3)
(C) y^(3/2)
(D) y^3
(E) y^6

答案和解析

答案：E

解析：

If x^(1/3) = y^2, then (x^(1/3))^3 = (y^2)^3, so x = (x^(1/3))^3 = (y^2)^3 = y^6.