I got a B- in Math. How bad is that for Econ? So the title explains why I'm posting. I'm a masters student in economics at a pretty prestigious university and one of the courses that you're required to take as a first year is called Math Methods for Economists. It covers topics from Calculus to Linear Algebra and Differential Equations. I really wanted an A in this class because I'm hoping to have the option of applying to a really good PhD program (although I'm not sure yet), but I got a B- in the class.

I'm pretty upset by this. I really thought I could get an A. I took Calc I and II as an undergrad and I got halfway through Linear Algebra- I dropped out because it was the last semester of my senior year and honestly I was just lazy (but I still remembered a lot of the concepts from the class).

In the class I did really quite poorly on the first exam and I do blame myself for not preparing enough for that one. I was going to drop the class and retake it in the Spring (because you have the option of taking it online with FULL internet access during the exams) but then the professor said that if you get an A on the final he'd just give you an A in the class. I was determined to use that loop hole and get that A on the final.

I spent the 5 days before the exam studying so hard- I mean every free second that I wasn't eating or sleeping- I was up until 3:00am every night studying. I don't think I've ever spent so much time preparing for an exam.

I kind of knew it was hopeless though. This professor gives insanely hard exam questions that he does almost nothing to prepare you for. As aforementioned, I have quite a bit of background in math and I have never seen math problems like the ones he puts on his exams.They're not conceptually hard to understand but he tries to trick you using the most obscure algebra techniques that even software has trouble finding a closed form solution for. I've tried plugging some of the problems into symbolab.com and multiple times I was told "can not be solved" - which I didn't even know was possible. 

I ended up getting an 82 on the exam and I just think its so unfair that I have to have a B- on my transcript. I've never blamed a professor for my own grade but this is ridiculous. I know some students complained about the professor directly to the program advisor before and nothing resulted from it.

Is there anything I can do about this? Does the B- condemn me to eternal graduate school hell? I'm really just looking for some peace of mind.
Is there anything I can do about this? 


I presume you mean "can do to change your grade"? No, grades are final (perhaps with an exception for mitigating factors). 


  Does the B- condemn me to eternal graduate school hell? 


I don't understand how a grade can condemn someone to "eternal graduate school hell," nor what "graduate school hell" is. If you are concern about graduate school admissions, then one grade will have little impact.