ANSWERS ANSWERS Exercise . . { , , , ,...} , { , , , ,...} , { , , , ,...} , yes. .
yes .(i) (ii) (iii) (iv) x .(i) (a) (b) (c) (d) (ii) . (iii) (a) { / } R ≤ ≤ ∈ (b) { / } R ≤ ≤ ∈ (iv) . .(i) - (ii) (iii) (iv) . .
inches (iv) cms Exercise . .(i) Not a function (ii) function (iii) Not a function (iv) function .(i) {( , ),( , ),( , ),( , ),( , )} (ii) f ( x ) (iii) .(i) (ii) f ( x ) .(i) { , , } (ii) one-one and into function .(i) Bijective function (ii) Not bijective function . a = – or , b = .(i) (ii) (iii) - . (iv) .(i) (ii) (iii) (iv) - .
Yes .(i) ° F (ii) . ° F (iii) ° F (iv) ° C (v) − ° Exercise . .(i) x - , ( x - ; not equal (ii) x - , - ; not equal (iii) - x , - x ; not equal (iv) x ; equal (v) + , x ; not equal .(i) - (ii) - . a = ± .