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If you can reduce the amount of work to complete your mathematical assignments, you save time. And time is the most important resource we have. This book is all about making the most logical approximations so that we can save work and time. You will learn many techniques in these pages, and I will attempt to explain the reasoning behind each, so that there is no rote learning involved, but deep logical processes at every step.
I have also included a large number of exercises, so that you can get really good at applying these techniques in real life. Remember, mathematics is always easy: you just need to learn it the right way!
