A particle moves according to the law x = a cos(pit)/(2). The distance covered by it in the time 2 interval between t = 0 to t = 3 sec is

A particle moves according to the law x = a cos(pit)/(2). The distance

1.	A particle moves according to the law x = a cos(pit)/(2). The distance covered by it in the time 2 interval between t = 0 to t = 3 sec is
Answer» 2a 3a 4a a Answer :B