Question

Which of the following is an even function

Answer 1

number2

Explanation:

Answer 2

f(x) = |x|

Explanation:

function is even if and only if f(-x) = f(x)

f(x) = |x| ; regard to its sign f(x) = x

f(-x) = |-x| ; regard to its sign f(-x) = x

So answer is f(x) = |x| is the even function