November 2018 1 80 Report
Tentukan himpunan penyelesain dari SLPDV: 4/x - 6/x =3 dan 8/x + 3/y = 1 !
jwb:
misal 1/x =a , dan 1/y=b
maka diperoleh:
persamaan (1)
4/x-6/y=3
4a-...=3
persamaan (2)
8/x + 3/y=1
... +3b=1
mencari nilai a maka eliminasi b
4a+...=13|x1| 4a-...=3
...+3b=1|x2| ... + 6b=2
-------------- (-)
...a=...
a=.../...
a=.../... di subtitusikan ke persamaan (1)
4a-...=3
4(...) - ...=3
....-...=3
-...b = 3-...
-...b = ...
b=.../...
sehingga diperoleh a=.../... kemudian suntitusikan ke permisalan di atas
1/x=a<=> 1/x=.../...
x=...
1/y = b <=> 1/y =.../...
y=...
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