WHICH OF THE FOLLOWING FUNCTIONS OF X AND T REPRESENTS A PROGRESSIVE W

1.	WHICH OF THE FOLLOWING FUNCTIONS OF X AND T REPRESENTS A PROGRESSIVE WAVE ?
Answer» Y=SIN (4T-3X) `y = (1)/(4+(4T-3X)^(2)` Y = `1/(4T+3X)` 1/(E4T+3X)` ANSWER :A::B

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