#extraneous_and_missing_solutions
Extraneous and missing solutions
In mathematics, an extraneous solution is one which emerges from the process of solving a problem but is not a valid solution to it. A missing solution is a valid one which is lost during the solution process. Both situations frequently result from performing operations that are not invertible for some or all values of the variables involved, which prevents the chain of logical implications from being bidirectional.
Tue 9th
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