Precalculus · Problem 5.1.51

Further Topics in Functions — Stitz & Zeager

Mathematics — Precalculus · function-composition-discrete

Problem

Let

f = \{(-3, 4),(-2, 2),(-1, 0),(0, 1),(1, 3),(2, 4),(3, -1)\}

and

g = \{(-3, -2),(-2, 0),(-1, -4),(0, 0),(1, -3),(2, 1),(3, 2)\}

. Find

(g \circ f)(-2)

if it exists.