I would normally use Gaussian Elimination to solve a linear system. If we have more unknowns than equations we end up with an infinite number of solutions. Are there any real life applications of these infinite solutions? I can think of solving puzzles like Sudoku but are there others?
Real life application of Gaussian Elimination
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linear-algebra
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1Is your question "Where do problems of infinite solutions come up?" or "Where do I use Gaussian Elimination for solving problems with infinite solutions"? Your content suggests the former, the title suggests the latter. – 2012-06-08