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Observe the graph:
The graph of the function passes through the origin.
Hence,the graph of the function is sine function.
The graph of the function is reflected about -axis.
The general form of sine functon is .
The negative sign indicates that the function flips about -axis.
Amplitude of the graph is .
The graph of the function starts at and completes one cycle at .
Period is .
Substitute values of and in .
.
The function of the graph is .
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