Identify Which of the Twelve Basic Functions Listed Below Fit $y = x ^ { 2 } , y = x ^ { 3 } , y = \sin x , y = \cos x$

question 162

Multiple Choice

Identify which of the twelve basic functions listed below fit the description given.
-The four functions with local minima

• A) \(y = x ^ { 2 } , y = x ^ { 3 } , y = \sin x , y = \cos x\)
• B) \(y = \sqrt { x } , y = \sin x , y = \cos x , y = x ^ { 2 }\)
• C) \(y = x ^ { 2 } , y = \sin x , y = \cos x , y = | x |\)
• D) \(y = \sin x , y = \cos x , y = | x | , y = \frac { 1 } { 1 + e ^ { - x } }\)

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