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Mathematics
Problem
If
f
:
R
→
R
f: R \to R
f
:
R
→
R
and
f
(
x
)
=
x
(
x
4
+
1
)
(
x
+
1
)
+
x
4
+
2
x
2
+
x
+
1
f(x) = \frac{x(x^4 + 1)(x + 1) + x^4 + 2}{x^2 + x + 1}
f
(
x
)
=
x
2
+
x
+
1
x
(
x
4
+
1
)
(
x
+
1
)
+
x
4
+
2
, then
f
(
x
)
f(x)
f
(
x
)
is a. one-one into b. many-one onto c. one-one onto d. many-one into
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