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Problem
Problem
Let
f
:
R
→
R
f: R \rightarrow R
f
:
R
→
R
, be defined as
f
(
x
)
=
e
x
2
+
cos
x
f(x) = e^{x^2} + \cos x
f
(
x
)
=
e
x
2
+
cos
x
, then
f
f
f
is (a) one-one and onto (b) one-one and into (c) many-one and onto (d) many-one and into
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