Question

give A ={x€W : - 2< X< 5 write the set A in roaster form and description form.​

Answer 1

Answer:

Solution

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Whole number less than 5 are 0,1,2,3,4.

i.e. x=0,1,2,3,4.

Given y=2x−1, putting x=0,1,2,3,4 we get

y=2×0−1,2×1−1,2×2−1,2×3−1,2×4−1

=0−1,2−1,4−1,6−1,8−1

=−1,1,3,5,7

The given set can be written as

{−1,1,3,5,7}    (roster form)

or  

{odd integers which lie between −2 and 8 }      (description form)

Step-by-step explanation:

Answer 2

Answer:

A={x:x€W :- 2<x<5}

Step-by-step explanation:

Roster method

x is a whole number greater than two less and than five, so 3, 4

Thereafter, A = {3,4}

Description method

A = {x is a whole number greater than two and less than five}