Dear Orion,


Your score in Exam 2 is 86 out of 100

Everything was right except

#2: right way, wrong answer due to a carless error:
 -2 points

#7(d): wrong answer, only partially right way
(the line y=c*x does not pass through the point (1,1):
-2 points

#8: Careless but serious error, you did |r(t)|dt
instead of |r'(t)|dt  (BE CAREFUL):
-6 points


#9: wrong answer, only partially right way.

(i) The domain of integration is x^2+y^2<3
NOT {0<x,y<3}

(ii) You did not multiply by -1 (Downward direction)

: - 6 points

Best wishes,

  Dr. Z.