Identify which of the twelve basic functions listed below fit the description given.
-The three functions that are even
A) $y = x ^ { 2 } , y = \cos x , y = | x |$
B) $y = x , y = x ^ { 2 } , y = x ^ { 3 }$
C) $y = x , y = \frac { 1 } { x } , y = x ^ { 3 }$
D) $y = \cos x , y = \sin x , y = | x |$

Question

Quizplus · Accepted Answer

Even functions satisfy the condition $f(-x) = f(x)$. The functions $y = x^2$, $y = \cos x$, and $y = |x|$ all satisfy this condition, making them even functions.

Identify Which of the Twelve Basic Functions Listed Below Fit y=x2,y=cos⁡x,y=∣x∣y = x ^ { 2 } , y = \cos x , y = | x |y=x2,y=cosx,y=∣x∣

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