So I had to take the inverse laplace transform of [(s+4)]/[(s^2+5s+6)(s+1)]. I did not realize to factor (s^2+5s+6) into (s+3)(s+2) and this could've made everything so much simpler for me if I did realize it on the exam. Instead, I completed the square and got (s+5/2)^2-1/4. I then did partial fraction expansion and my final answer came out to be the exact same function as it is when you factor (s^2+5s+6) into (s+3)(s+2), but expressed in a slightly different way, with cosh's / sinh's instead of completely exponentials.
Now, the thing is that my answer is 100% correct. I talked with the professor, who gave me 0 points on this problem because my answer was not in the form that he wanted, that it was too complicated. He realizes that it is mathematically correct, but he's saying that it is not a "math class." He then said that I was harrassing him and kept bringing up the fact that he is a professor.
This ****** me off, obviously, because I'm getting 0 points on a problem that I did flawlessly and that is 100% correct, as far as the math goes.
I'm wondering if this has happened to anyone and what I can do about it?