-8/27 xyz( 3/2 xyz^2 - 9/4 xy^2 z^3)
Answers
Answer:
z=
xy
3
,x+2y+4×
xy
3
=9
x+2y+
xy
3(4−3xy)
=0
xy(x+2y−9)=−12
C-I xy=1,x+2y=−3
x+
x
2
+3=0(−1,−1,3)
x
2
+3x+2=0−1,−2(−2,
2
−1
,3)
C-II xy=−1,x+2y=21⇒x=
2
21±
449
x+
x
2(−1)
=3,x
2
−3x−2=0
x=
2
3±
9−4(−2)
=
2
3±
17
C-III xy=2,x+2y=−6+9=3
x+2
x
2
=3⇒x
2
−3x+4=0
D=9−4.1.4<0
C-IV xy=−2,x+2y−9=6
x+2y=15,x
2
−15xx−4=0
x+2(
x
−2
)=15,15
2
+4.1.4
C-V xy=3,x+2y−9=−4,x+2y=5
x+2
x
3
=5⇒x
2
−5x+6=0
⇒x=2.3
x=2,y=
2
3
,z=1(2,
2
3
,1)
x=3,y=1,z=1(3,1,1)
C-VI xy=−3,x+2y−9=4
x+2y=13
x+
x
2(−3)
=13
x
2
−13x−6=0,D=13
2
+4×6=193
C-VII xy=4
x+2y−9=−3
x+2y=6
x+2
x
4
=6
x
2
−6x+8=0
x=2,4
x=2,y=4,z=
4
3
(2,3,
4
3
)
x=4,y=1,z=
4
3
(4,1,
4
3
)
Step-by-step explanation: