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## Main Question or Discussion Point

Let me explain what I mean.

When you try to solve an algebraic equation, or even sometimes a differential equation it is useful to change variables so the new form of the equation is easier to solve, or takes the form of an equation that has already been solved.

Another technique is making your equation equal to a possible solution in the form of an infinite series and computing what are the coefficients.

There are many of these techniques that we all know, but my question is if there is anybody compiling them into a book format. What about mathematics historians? Do the compile them?

Thanks for your time.

When you try to solve an algebraic equation, or even sometimes a differential equation it is useful to change variables so the new form of the equation is easier to solve, or takes the form of an equation that has already been solved.

Another technique is making your equation equal to a possible solution in the form of an infinite series and computing what are the coefficients.

There are many of these techniques that we all know, but my question is if there is anybody compiling them into a book format. What about mathematics historians? Do the compile them?

Thanks for your time.