[rArrquad y=x^(3)-(2 pi)/(27)cos x],[" as the required solution."],[" 31.The two adjacent sides of a parallelogram are "2hat i-4hat j-5hat k" and "2hat i+2hat j+3hat k" .Find the two "],[" 31.The two adjacent sides of a parallelograonal vectors,find the area of the parallelogram,"],[" unit vectors parallel to diagonals.Using the diagonal vectors,find the area of the parallelogram,"],[" unit vectors parallel to diagonals.Using the diagonal vectors,find the "],[" solution.Let "ABCD" be a parallelogram such that "rarr2hat i+2hat j+3hat k]