Dear Abdul-Ahad,

 Please consult

https://sites.math.rutgers.edu/~zeilberg/Hist21/mt2S.pdf

for the full solutions.


You got 117 points (out of 120). 


Here is what you got wrong:

#4: -3 points (the expression for F is not in terms of a and b, and you did not explain)



 Best wishes,

   Dr. Z.