That's why I always taught my students to check their answers make sense, especially when they've been using a calculator. If they end up with a length of -5cm, they've probably hit a wrong button.
But of course, it's possible to model a real situation with an equation which then produces extra solutions that don't apply to reality. In other words, it's not a one-to-one mapping.
But of course, it's possible to model a real situation with an equation which then produces extra solutions that don't apply to reality. In other words, it's not a one-to-one mapping.
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Please visit my website here! It's got lots of information about atheism/theism and support for new atheists.
Index of useful threads and discussions
Index of my best videos
Quickstart guide to the forum