math: try to grasp related rates
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@ -542,7 +542,7 @@ When solving for questions that ask for rate of change related to other rates of
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- variables are defined
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- variables are defined
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- equations are written in terms of derivates
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- equations are written in terms of derivates
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- the equations are differentiated **with respect to time**
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- the equations are differentiated **with respect to time**
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- apply derivative rules (especially the chain rule) to every variable that is not time
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- apply derivative rules (especially the chain rule) to every variable that is not a constant
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- substitute values only at the end
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- substitute values only at the end
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## Resources
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## Resources
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