Solved

Find the Amplitude, Period and Phase Shift Of $y = 2 \cos \left( 4 x - \frac { \pi } { 2 } \right)$

Question 124

Essay

Find the amplitude, period and phase shift of $y = 2 \cos \left( 4 x - \frac { \pi } { 2 } \right)$
and sketch its graph.

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