Phương trình cos3x = -√2/2 có dạng là

Chinese culture (simplified Chinese: 中华文化; traditional Chinese: 中華文化; pinyin: Zhōnghuá wénhuà) is one of the world's oldest cultures, originating thousands of years ago.[1][2] The culture prevails across a large geographical region in East Asia and is extremely diverse and varying, with customs and traditions varying greatly between provinces, cities, and even towns as well. The terms 'China' and the geographical landmass of 'China' has shifted across the centuries, with the last name being the Great Qing before the name 'China' became commonplace in modernity.

Porcelain is so identified with China that it is called "china" in everyday English usage.

step-by-step explanation:

b and c

x equals 1

step-by-step explanation:

f(4)=f(×)

x=1