Write the following sets in the roster form.
(i) A = {x | x is a positive integer less than 10 and 2x – 1 is an odd number}
(ii) C = {x : x2 + 7x – 8 = 0, x ∈ R}
Answers
Question
Write the following sets in the roster form.
(i) A = {x | x is a positive integer less than 10 and 2x – 1 is an odd number}
(ii) C = {x : x2 + 7x – 8 = 0, x ∈ R}
Answer
(i) x is a positive integer according to question and is less than 10. Now, while substituting positive values less than 10 in 2x - 1, the answers we may get are : 1, 3, 5, 7, 9, 11, 13, 15, 17. All the results we get are odd.
(ii) x² + 7x - 8 = 0, Solving the Given quadratic equation.
Answer:
Hi
Step-by-step explanation:
(i) x is a positive integer according to question and is less than 10. Now, while substituting positive values less than 10 in 2x - 1, the answers we may get are : 1, 3, 5, 7, 9, 11, 13, 15, 17. All the results we get are odd. (ii) x² + 7x - 8 = 0, Solving the Given quadratic equation.