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Originally Posted by alroumi  Ohh the joy of teaching and re teaching your self, calculus, algebra and trigonometry.  |
I got really good at doing 'differential calculus' when I was at school, and I've managed to get to the grand old age of 51 years and 6 months, and have never used it in my life (I also managed to miss out on trigonometry, due to changing schools, and ended up being the technical director (before I retired) of a survey company(where it could be quite useful) without having a clue how to do it!!).