Câu 1. Tìm tập xác định của mỗi hàm số sau: a) = √−1 −2
b) y = √ + 5 − √4 − 2
Câu 2. Xét tính chẵn, lẻ của mỗi hàm số sau:
a) = 23 −
b) = |2 − 1| + |2 + 1| 10) = √1 − − √1 +

Which property is illustrated by the statement given below? raj raj.

Which question is not a good survey question? a. don't you agree that the financial crisis is essentially over? 63on average, how many hours do you sleep per day? c. what is your opinion of educational funding this year? d. are you happy with the availability of electronic products in your state?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me