Question

Q2) Write the following set in roster form:

B= {x : x = n3 − 2 , n ∈ N and 3 ≤ n ≤ 5 }
step by step explain​

Answer 1

Answer

B= {x : x = n3 − 2 , n ∈ N and 3 ≤ n ≤ 5 }

in roster form

B = {7,10,13}

Step-by-step explanation:

• given x = n3 -2 and n should be greater than or equal to 3 and less than or equal 5 and n is natural number
• so we can put in place of n only 3,4,5
• when n = 3 , x = 3×3 - 2 = 7
• when n = 4 , x = 4×3 - 2 = 10
• when n = 5 , x = 5×3 - 2 = 13

so B = {7,10,13}

hope u understand