Let f(x)= x2-9x-3, on its largest real domain. Simplify its formula and state its domain and range.

Question

Let f(x)= x2-9x-3, on its largest real domain. Simplify its formula and state its domain and range. Explain why f is not the same function as g(x)=x+3, x in R.

Accepted Answer

$x+3$, $x\ne3$; range $y\ne6$; the domains differ.

A cancelled factor and a missing input

A cancelled factor and a missing input

Solution:

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