English Version Class 9 Mathematics 1st week 2022 Assignment Solution

Описание: #9_1st_week_2022_ab
English Version Class 9 Mathematics 1st week 2022 Assignment Solution :    • English Version Class 9 Mathematics 1st we...  

A = {x : x is positive integers and x2 is smaller than 20}
B = {x : x ∊ N and x2 – 7x + 12 = 0}
f(y) = (4𝑦 −1)/(3𝑦+1)
1. Express B set in roster method.
2. Find P(A) and show that, number of elements of P(A) supports 2n where n is the number of elements of A.
3. Express R = {(x,y) : x∊A, y∊B and x+1 is smaller than y} by using roster method.
4. Determine the value of ("f(" 1/𝑦 ")" −1)/("f(" 1/𝑦 ")" +1).

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