Integrate the given function. 1/9 4x sec x tan xdx 0Find all the second partial derivatives. X Z= xty y -z O A. X E * z x- y ax 2 = (x + y) 3 2 dy (x+ y ) 3 dyax axdy ( x + y)s 2y OB. 2x - 2x2 = x- y ( x + y) 3 (x + y)3 ' ayax -axdy (x + y)3 O C. 2y 2x 2 = - x- y ax ( x + y)3 (x+ y)3 ' ay (x + y)3 ' dyax axdy ( x+ y)3 z OD. 2y 2x azz z = y - X ox 2 (x + y)3 ' ay 2 (x+ y)3 ' dydx - axdy ( x + y) 3Integrate the given function. 1/4 sec x dx 0 12 + tanx