A. True

B. False

Cho hàm số y = 2 x − x 2 . Chọn đẳng thức đúng

A. y 3 . y " + 1 = 0

B. y 3 . y ' − 1 = 0

C. y 2 . y " + 1 = 0

D. y 3 . y " − 1 = 0

Choose A, B, C, or D that best completes each sentence.

Question 2: They were finally______with each other, after not speaking for nearly five years.

A. reconciled

B. persuaded

C. interested

D. fond

Tính  l i m x → 0 + 2 x + x x - x

A.  + ∞

B.  - ∞

C. 1

D. -1