Math  Calculus
posted by Anonymous .
Are endpoints also critical points?
I'm trying to find the critical points of a function on the interval [1,5]. So far,the only critical point I have is 2. Does that mean 1 and 5 are also critical points?

only if it is horizontal there.
http://www.google.com/search?q=critical+point+of+function&ie=utf8&oe=utf8 
I hope it was not you who posted this earlier, where I explained it all.
http://www.jiskha.com/display.cgi?id=1489049850 
Yeah, how dare I ask for clarification on something I'm trying to understand.
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