\( f(x)=2 x-1 \) and \( g(x)=3 x^{2} \) Find both \( f \circ g \) and \( g \circ f \), stating domain and range of each.

Jika jumlah \( n \) suku pertama dari suatu deret adalah \( \mathrm{S}_{n}=2 n+3 n^{2} \) maka jumlah suku ke- 6 dan suku ke- 11 dari barisan tersebut adalah

Dato \( A=\left\{-1,-\frac{1}{2}, 0,1, \frac{1}{2}\right\} \), considera la fun- zione \( f: A \rightarrow \mathbb{Z} \) definita dalla legge \( f(x)=4 x^{2}-1 \) Trova l'insieme immagine di \( f \).

simplify it \( \sqrt[4]{r^{3} s \sqrt[5]{r^{2} \cdot s^{4}}} \div \sqrt{r^{2} s^{2}} \)

Considera la funzione \( f: \mathbb{Q} \rightarrow \mathbb{Q} \) che associa ogni \( x \) il suo triplo e calcola \( f(x) \) quando: \( x=0, \frac{1}{9},-4,-\frac{1}{3} \)

What does the exponent in an expression indicate?