SOLUTION: Differentiate x-2 from the first principle.

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Question 935617: Differentiate x-2 from the first principle.
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
y%28x%29=x-2
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y%28x%2Bh%29=x%2Bh-2
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y%28x%2Bh%29-y%28x%29=x%2Bh-2-%28x-2%29=h
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%28y%28x%2Bh%29-y%28x%29%29%2Fh=h%2Fh=1
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dy%2Fdx=1