^X/Y=4, 1/X+1/Y=1/XY convert into simultanious equation and solve
Answers
Answer:
x = 16/17
y = 1/17
Simultaneous equations are
x - 16y = 0
x + y = 1
and the required solution is
x = 16/17, y = 1/17.
Step-by-step explanation:
The given equations are
√(x/y) = 4
or, x/y = 16
or, x = 16y
or, x - 16y = 0 ..... (1)
1/x + 1/y = 1/(xy)
or, (y + x)/(xy) = 1/(xy)
or, y + x = 1
or, x + y = 1 .... (2)
Thus we have the following simultaneous equations:
x - 16y = 0 ..... (1)
x + y = 1 ..... (2)
Now, we solve these equations.
1. Using 'substitution method'.
The equations to solve are
x - 16y = 0 ..... (1)
x + y = 1 ..... (2)
From (1), we get x = 16y
Now substituting x = 16y in (2), we get
16y + y = 1
or, 17y = 1
or, y = 1/17
Putting y = 1/17 in (1), we have
x - 16/17 = 0
or, x = 16/17
Therefore the required solution is
x = 16/17, y = 1/17
2. Using 'elimination method'.
The equations to solve are
x - 16y = 0 ..... (1)
x + y = 1 ..... (2)
Multiplying (1) by 1 and (2) by (1), we get
x - 16y = 0
x + y = 1
- - -
-------------------
- 17y = - 1
or, y = 1/17
Putting y = 1/17 in (1), we get
x - 16/17 = 0
or, x = 16/17
Therefore the required solution is
x = 16/17, y = 1/17
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