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If \( f(x)=\sin x \) such that \( f: R \rightarrow R \) is not one-one and onto then which of the following is one-one and
\( \mathrm{P} \)
onto.
W
(1) \( \left[-\frac{\pi}{2}, \frac{\pi}{2}\right] \rightarrow[-1,1] \)
(2) \( \left(-\frac{\pi}{2}, \frac{\pi}{2}\right) \rightarrow[-1,1] \)
(3) \( [0, \pi] \rightarrow[-1,1] \)
(4) \( [0, \pi] \rightarrow[0,1] \)
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