Let A be the set of all even whole numbers less than 10.
(a) Write A in roster form.
(b) Fill in the blanks with the approximate symbol `in or lin`:
(i) `0......A`
(ii) `10........A`
(iii) `3.........A`
(iv) `6............A`.
Correct Answer - `**` is not commutative, `**` is associative, (1,0) is the indentity, inverse of (a,b) is `((1)/(a),(-b)/(a))`
Or, `f^(-1)(y)=(sqrt(y+6)-1)/(3)`