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Hilo
giai pt bac 2-2

tinh tien di taxi

tinh sinx

tim k min de 2^k>N

tram trau tram co

tinh to hop chap k cua n

bang cuu chuong

boi chung nho nhat

tinh tong 2 ma tran

so hanh phuc

tinh tong thoi gian

tinh cosx

e^x+sinx=2

tinh tich 2 ma tran

giai he pt

tim cac uoc cua n

giai pt bac 2

lich van nien