Determine if the correspondence is a function- Domain- a set of circles
Correspondance- the circumference of each circle
Range- a set of numbers
Is this a function? How do I tell?

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LanBon02

01.08.2020

Mathematics

(i) f(-3) = (-3)^2+2(-3)+1

9-6+1=10-6=4

(ii)f(5)= (5)^2+2(5)+1

25+10+1=36

(iii) Please check this question if it's correct or not

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Determine if the correspondence is a function- Domain- a set of circles Correspondance- the circumference of each circle Range- a set of numbers Is this a function? How do I tell?