- #1
robertjford80
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Homework Statement
This actually part of the Friedman equation but it's the math part I'm having trouble with. I'm simplifying down to the nitty-gritty.
a'/a = x
a' = ax
a = e^x
And the lecturer said that when a rate of change is proportional to thing itself then you multiply the thing itself by exp. I don't recall learning about that rule. What is it's name so that I can go back and practice it.
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