math: try to grasp related rates

2020-11-03 11:18:11 -05:00 · 2020-11-03 11:18:11 -05:00 · e86930cce2
commit e86930cce2
parent 3d5635c9e1
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--- a/docs/mhf4u7.md
+++ b/docs/mhf4u7.md
@ -542,7 +542,7 @@ When solving for questions that ask for rate of change related to other rates of
 - variables are defined
 - equations are written in terms of derivates
 - the equations are differentiated **with respect to time**
- - apply derivative rules (especially the chain rule) to every variable that is not time
+ - apply derivative rules (especially the chain rule) to every variable that is not a constant
 - substitute values only at the end

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