Find the domain of the polynomial function .

MATHEMATICS · Single correct · CBSE · Mathematics · Polynomials · Polynomials

Problem

Find the domain of the polynomial function

f(x)=7x^4-3x^2+5

. (a)

[0,\infty)

(b)

\mathbb{R}

(c)

(-\infty,0)\cup(0,\infty)

(d)

(-\infty,-\sqrt{\tfrac{5}{7}}] \cup [\sqrt{\tfrac{5}{7}},\infty)