Home » Signals and Systems » Signal and systems miscellaneous » Question

E [2x + 3] in —
f_XY(x, y) = X + 2Y ; X = 0, 1
14
0; otherwise

1. 15
  14
2. 25
  14
3. 35
  14
4. 85
  14

Correct Option: D

	_∞	_∞
X(z) =			(2X + 3Y) f_XY(x, y)
	^{X = – ∞}	^{Y = – ∞}

	₁	₂
X(z) =			(2X + 3Y).(X + 2Y)
	^{X = 0}	^{Y = 1}	14

=	85
	14