Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES)
A wave travelling along the x-axis is described by the equation y (x, t) = 0.005 cos `(alpha-betat)`.If the wavelength and the time period of the wave in 0.08m and 2.0 s respectively then `alpha` and `beta` in appropriate units are