Question

Jeff

（急）求解這題！
/機率論

-Y
(HW2) Z1E12 (X. 1) 37 T 1 An in the 24 tz fxx (x,y) = ce», osxey , to:
(i) C (ii) PLXCY)
(iii) May (ti, tz)
sel: (i) 1 = 80 s ce dxdy = f cxet | Rudy = 5 cye't dy
1 So
X go
x=y
DO
-
X=
1
U = y dy, du-dy
dr. e dy , V=-et
Cl-yey + Seydy )
:((-yet-e")
=
c =
-Y
-ye"
e-y