Manic-depression: Alternating moods of abnormal highs (mania) and lows (depression). Called bipolar disorder because of the swings between these opposing poles in mood.A type of depressive disease. Not nearly as prevalent as other forms of depressive disorders.anic-depression: Alternating moods of abnormal highs (mania) and lows (depression). Called bipolar disorder because of the swings between these opposing poles in mood.
If you have a year of college level math, including some stats and some calculus, you should meet the requirement for every US allopathic medical school. Although, on second thought, I think Harvard may have required a year of calc, but that may be going away. Stay focused on what you want.
The bottom line is you need to be good at university level maths to get through a Master's degree in Petroleum Engineering. The A levels needed to get on to any of the above named undergraduate courses are Mathematics, Further Mathematics, Physics , & Chemistry.