A) -4
B) 4
C) \[4\sqrt{2}\]
D) 8
Correct Answer: C
Solution :
\[x=4(\cos \pi t+\sin \pi t)\] \[=\frac{4}{\sqrt{2}}\times \sqrt{2}[\cos \pi t+\sin \pi t]\] \[x=4\sqrt{2}\left[ \pi t+\frac{\pi }{4} \right]\] So, amplitude\[=4\sqrt{2}\]You need to login to perform this action.
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