Question

Let f: A -> B: f(x) = x² where A={1,-1, 2,
-2}, B = {1,-1, 2, -2, 3,-3,4,-4}. Find f (1),
f(-1), f(2), f(-2). Does - 2 EB have pre-image
in A. [ for example f(-1) = -1²=1EB. Here
image of -l is I or pre-image of I is -1]
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Answer 1

Answer:

use your brain

Step-by-step explanation:

good question