- #1

PrudensOptimus

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_{a}b * log

_{c}d = log

_{a}d * log

_{c}b

and

log

_{a}b * log

_{b}c = log

_{a}c.

Chain Rule.

Now I read Calculus, I found out about the Chain rule, are they the same?? Looks like it. But because of my poor English reading, I couldn't understand the text. Can some one explain what Chain rule is?