Find the domain of the function .

MATHEMATICS · Single correct · A Level · Mathematics · Exponentials and logarithms · Exponentials and logarithms

Problem

Find the domain of the function

f(x)=7\cdot3^x

. (a)

(0,\infty)

(b)

\mathbb{R}\setminus\{0\}

(c)

(-\infty,\infty)

(d)

\mathbb{Z}