1) Evaluate the integral (to312 ) ;+ (60-3t) 1+ (4) klat. [ [ ( 18 3 7 ) 1 + ( 60 - 31) 1 + 14) kx ] at = (D + + (D) 1 + (D K . 0 (Type exact answers.) 2) Solve the initial value problem for r as a vector function of t. dr Differential equation: dt = -ti-tj-tk Initial condition: r(0) = 31 + 5j + 6k r ( t ) = ( ) ; + ( 0) ; + ()