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A wave is represented by the equation ...

A wave is represented by the equation
`y = A sin(10pix + 15pit + (pi)/(3))`
where `x` is in meter and `t` is in seconds. The expression represents :

A

a wave travelling in the positive x-direction with a velocity 1.5 m/s

B

a wave travelling in the negative x-direction with a velocity `1.5 m//s`

C

a wave travelling in the negative x-direction ·having a wavelength 0.2 m

D

a wave travelling in the positive x-direction having a wavelength 0.2 m

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