A plane progressive wave is represented by the equation y = 0.25 cos (2πt -2πx). Find the equation of the wave with double the amplitude and travelling in opposite direction.
1
y = 0.5 cos(2πt +2πx)
2
y = 0.5 cos(2πt -2πx)
3
y = 0.5 cos(πt +πx)
4
y = 0.5 cos(πt -πx)
5
Not Attempted