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Problem
Problem
If
y
=
f
(
x
)
=
a
x
+
b
c
x
−
a
y = f(x) = \frac{ax+b}{cx-a}
y
=
f
(
x
)
=
c
x
−
a
a
x
+
b
, then
x
x
x
is equal to a.
1
/
f
(
x
)
1/f(x)
1/
f
(
x
)
b.
1
/
f
(
y
)
1/f(y)
1/
f
(
y
)
c.
y
f
(
x
)
yf(x)
y
f
(
x
)
d.
f
(
y
)
f(y)
f
(
y
)
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