S2..

• 10

• 5

• 10

• 12

• 10

• 6

• 8

• ℝ−{1,−1,−2}

• ℝ−{1,−2}

• ℝ−{1,−1,2}

• {1,2}

• ℝ

• −5

• −10

• −20

• undefined

• ℝ

• ℝ−{3,5}

• [4,∞[

The even function from the functions that are defined by the following rules is

• ƒ(x)=x³

• ƒ(x)=sin x

• ƒ(x)=x cos x

• ƒ(x)=x sin x

The function ƒ:ƒ (X) = X cos (x) is....

• even

• odd

• neither even nor odd

• one-to-one.

If ƒ is an odd function, a ∈ the domain of ƒ, then ƒ(a) + ƒ(−a) =.....

• zero

• 2 ƒ(a)

• 2 a

• ƒ (a)