1 ( a) Area under curve f (x ) = 3x2+ 5 from x=0 to x = 4 using 4 left rectangles ( b ) exact area under curve f(x ) = 3x2 + 5 , X = 0 to x= 4 using Fund , theorem calc (2) Use limit of a Riemann sum to compute the exact area under the curve f (x)= 4x+1 from x= 0 to x = Z. specify Ax, xisend f(xi (3) Object is dropped from height of 256 ft ( initial beigh) then it's velocity, V in ft/sec, at time + is given by V (+ ) = - 32 + @)find. wight (h) of the object at time + by soluing, initial value problem (h (0 )= 256) Find height of the object at time t= 2 seconds ( @) Find how long, it will take the object to hit the ground