Please!

Stupid q, but...

What is the proof that (5)' =0?

f(x)=5

f'(x)=0

I see that the graph has NO SLOPE, but how to proove it arithmetically?

Many thanks!

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- July 25th 2013, 01:45 AM #1

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- July 25th 2013, 06:41 AM #4

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