... ),()(mnmjmminijiinjnjppppppppppppppppLLMMMMMMLLMMMMMMLLLL 21 21 22 222 111 121 1 2. 6. Hàm cahaibinngu nhiên ∑jijp∑iijp 2. 6. Hàm cahaibinngunhiờn Vớ dá Cho cỏc binngunhiờnX, Y viá Xỏc ... là:byxeyxfYYYXYXXXyyxxYXXY.1|| , , , 12 1),( 2 2 2 2 2 )( ))( (2 )()1 (2 1 2 <+∞<<∞−+∞<<∞−−=⎟⎟⎠⎞⎜⎜⎝⎛−+−−−−−−ρρσπσσμσσμμρσμρ),,( 2 1),()( 2 2/)( 2 22 XXxXXYXNedyyxfxfXXσμπσσμ−−∞+∞−==∫),,( ... 2 1),()( 2 2/)( 2 22 YYyYXYYNedxyxfyfYYσμπσσμ−−∞+∞−==∫).,,,,( 22 ρσσμμYXYXN 2. 6. Hàm cahaibinngu nhiờn Cỏc binngunhiờnclpá Hai binngunhiờnX vY ccoilclpthng kờ nuhais...