Question

consider the following functions.
$f = \\{(1,0),(2, 3),(4,0)\\}$
and
$g = \\{(3,1),(2,-1),(-3,-2)\\}$
step 3 of 4 : find $(fg)(2)$.
answer
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$(fg)(2) = \square$

Explanation:

Step1: Find f(2) from f's pairs

From $f = \{(1,0),(2,3),(4,0)\}$, when input is 2, $f(2)=3$.

Step2: Find g(2) from g's pairs

From $g = \{(3,1),(2,-1),(-3,-2)\}$, when input is 2, $g(2)=-1$.

Step3: Calculate product of f(2) and g(2)

$(fg)(2) = f(2) \times g(2)$

Answer:

$-3$