I have a list of equations. Some of them are algebraic equations like
2x == y / (y+1), others contains derivatives in them(e.x.
df/dx == 0). Note they are not differential equations. As they can be simplified from other algebraic equations before taking the (partial) derivative. After taking the partial derivative, they will all be algebraic equations themselves. For example, I have the following three equations:
x^2 + y = 8 z = 9x + 4y dz/dx = 0
After replacing y with
8 - x^2. dz/dx is
9-8x. Letting 9-8x equals to 0 we get x = 9/8, hence the solution.
My question is how to do this in Mathematica? In reality, I have dozens of equations like that, it’s possible to solve manually, but I need to learn this skill to solve using software, if it’s possible.
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