Practice problem
Given functions q(x)=1xq(x)=\dfrac1{\sqrt x}q(x)=x1 and h(x)=x2−9h(x)=x^2-9h(x)=x2−9, what is the domain of h(q(x)) h(q(x))\:h(q(x))?
x≥0x\geq0x≥0
{x∣−∞<x<∞,x≠3∪x≠−3}\{x|-\infty<x<\infty,x\neq3\cup x\neq-3\}{x∣−∞<x<∞,x=3∪x=−3}
{x∣x ∈ R,x≠0}\{x|x\;\in\;\mathbb R, x\neq 0\}{x∣x∈R,x=0}
−3>x>3-3>x>3−3>x>3
Type a concept, like “slope” or “photosynthesis”.
