... than cos x, implying y is monotonic , i.e. y has no critical point for x≧0 For x<0, 0 < e^x <...
...x)=0 OR f"(x)=0 處均得 F'(x)=0. 若 f 有 k > 1 個 critical points , 設 f'(a) = 0 = f'(b), 則介於 a, b 之間, 存在 c 使 f"(c) = 0...
A critical point is a point on the domain of a function where the derivative is equal to zero or does not exist. It is also called a stationary point . Critical points include saddle points and local extremums. In one or several...
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As follows: 圖片參考：http://i117.photobucket.com/albums/o61/billy_hywung/Aug07/Crazydiff31.jpg
Please see the above, if not, please go to: http://i726.photobucket.com/albums/ww265/physicsworld2010/physicsworld01Sep201114.jpg?t=1253416492 圖片參考：http://i726.photobucket.com/albums/ww265/physicsworld2010/physicsworld01Sep201114.jpg?t=1253416492
...x) = 3ax^2 + 2bx + c if f'(t) = 0 or not exist, then we call that t is critical point . Since f'(x) is polynomial, so f'(x) is exist on ...
... within the absolute value: x-2 and 2x+1 As you mentioned, the critical points are the numbers changing sign (from -ve to +ve or vice versa...
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