CHO 1 ( ) 3 ( )2; 5F X DX F X DX= − =2 F X DX .1 1−1− ∫− ∫

câu 31: - de-kscl-thi-thpt-quoc-gia-2020-mon-toan-lan-3-truong-thpt-chuyen-vinh-phuc
de-kscl-thi-thpt-quoc-gia-2020-mon-toan-lan-3-truong-thpt-chuyen-vinh-phuc

Câu 31: Cho 1 ( ) 3 ( )

2; 5

f x dx f x dx

= − =

2 f x dx .

1 1

−

1

− ∫