A) \[\varphi (3p)\]
B) \[3\varphi (p)\]
C) \[6\varphi (p)\]
D) \[2\varphi (p)\]
Correct Answer: A
Solution :
\[\varphi \,(x)={{a}^{x}}\,\Rightarrow \,\,\varphi \,\,(p)={{a}^{p}}\] \[\therefore \,\,\,{{[\varphi \,(p)]}^{3}}={{[{{a}^{p}}]}^{3}}={{a}^{3p}}=\varphi \,(3p)\]
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