Punctul a)
[tex]\displaystyle{x \cdot 10, \forall \ x \in \mathbb{R}}[/tex] sau [tex]\displaystyle{10x, \forall \ x \in \mathbb{R}}[/tex]
Punctul b)
[tex]\displaystyle{x^{n} - x \cdot 2}[/tex] sau [tex]\displaystyle{x^{n} - 2x}[/tex]
Punctul c)
[tex]\displaystyle{ 3x - x^{2}, \forall \ x \in \mathbb{R}}[/tex] sau [tex]\displaystyle{x \cdot 3 - x^{2}, \forall \ x \in \mathbb{R}}[/tex]
#copaceibrainly