Question

Let = {1, 2, 3} and = {2, 4, 6, 8}. Consider the rule f:A→defined () = 2, ∀∊ , then range of f is given by set​

Answer 1

Answer:

2+3+4+6+8/2

is the range

Answer 2

SOLUTION

COMPLETE QUESTION

Let A = {1, 2, 3} and B = {2, 4, 6, 8}. Consider the rule f : A → B defined f(x) = 2x , ∀ x ∈ A , then range of f is given by set

EVALUATION

Here the given sets are

A = {1, 2, 3}

B = {2, 4, 6, 8 }

Now the rule f : A → B defined by

f(x) = 2x , ∀ x ∈ A

Now

f(1) = 2 × 1 = 2

f(2) = 2 × 2 = 4

f(3) = 2 × 3 = 6

Hence the required range set = { 2 , 4 , 6 }

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