Question

The co-domain of f : A → B where A = {2, 3, 5, 6}, f (x) = 2x – 1 can be taken as _______​

Answer 1

Step-by-step explanation:

: a simple function like f(x) = x2 can have the domain (what goes in) of just the counting numbers {1,2,3,...}, and the range will then

Answer 2

The co-domain of f : A → B where A = {2, 3, 5, 6}, f(x) = 2x – 1 can be taken as { 3 , 5 , 9 , 11 }

Given :

f : A → B where A = {2, 3, 5, 6}, f(x) = 2x – 1

To find :

The co-domain of f

Solution :

Step 1 of 2 :

Write down the given function

Here it is given that

f : A → B where A = {2, 3, 5, 6} , f(x) = 2x – 1

Step 2 of 2 :

Find the co-domain of f

f(2) = ( 2 × 2 ) - 1 = 4 - 1 = 3

f(3) = ( 2 × 3 ) - 1 = 6 - 1 = 5

f(5) = ( 2 × 5 ) - 1 = 10 - 1 = 9

f(6) = ( 2 × 6 ) - 1 = 12 - 1 = 11

The co-domain of f is { 3 , 5 , 9 , 11 }

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