Cho hàm số y  f  x có đạo hàm    2020 2 2 ( ) ( 3) 2021 2 , x x f  x  x     x  x x . Gọi S là
tập hợp tất cả các giá trị nguyên của tham số m để hàm số  
2 y  f x 8x  m có đúng 3 cực trị
1 2 3 x , x , x thoa mãn
2 2 2
1 2 3 x  x  x  50 . Khi đó tổng các phần tử của S bằng

Acircle has a circumference of 2 pi cm. which statement about the circumference and area is true? a comparison of the area and circumference is not possible since the area cannot be determined. the numerical values of the circumference and area of the circle are equal. the numerical value of the circumference is greater than the numerical value of the area. the numerical value of the circumference is less than the numerical value of the area.

Which of the following points is collinear with (-2,1) and (0,3)

The scatterplot below shows the number of hours that students read weekly and the number of hours that they spend on chores weekly. which statement about the scatterplot is true?