Ngày tải lên :
25/04/2015, 15:00
... 8(1/2) ,9( -3) ,10(2), 11(0) ,12(1),13(1/8),14(0), 15(+ ∞ ), 16(0) Bài 2:1(1),2(1),3(5),4(3),5(5),6(1) Bài 3:1(-1/2),2(1/2),3(+ ∞ ),4(-1/2) Bài 4: 1(3/2),2(13/2),3(4),4(2),5(4), 6(-1),7(2 ),8(-4) ,9( -4),10(3),11(2),12(1) ... 2x + y= 2x + 1+ x 23) y = 1− x x sin x + cos x y= sin x − cos x π 9) y = cot (2x + ) 10) y = sin (cos x) 7) y = sin 18) y = 19) y = + x − 2x x (x2- x +1) x 27) y = x + x − ÷ x−2÷ ... 2(y’)2 =(y -1)y’’ c) Cho hàm số y = 2x − x2 Chứng minh rằng: y y"+ = Bài 9: Chứng minh f '( x ) > ∀x ∈ ℜ , biết a f ( x) = x9 − x + x3 − x + x − b/ f ( x ) = x + sin x x2 + x Bài 10:Chohs y = (C)...