Page 197 - DMTH201_Basic Mathematics-1

Basic Mathematics – I

Notes 8. Which of the following functions are many-to-one functions?
(a) f : { 2, 1,1,2} {2,5} defined as f(x) =x + 1
2
(b) f : {0,1,2} {1} defined as f(x) = 1

(c)

(d) f : N N defined as f(x) = 5x + 7
9. Draw the graph of each of the following functions :

(a) y = 3x 2
(b) y = x 2
2
(c) y = x 2
(d) y = 5 x 2

2
(e) y = 2x + 1
(f) y = 1 2x 2
10. Which of the following graphs represents a functions?

(a)

(b)

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