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105

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2.

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1 (0,1),(1, 2),(2, 3),(3, 4)
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(2) r2 r1 (0,1),(1, 2),(2, 3),(3, 4)

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111

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118

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3) r (1, 0),(2, 0),(3, 0),(4, 0),(5, 0)
4) r (0, 0),(1,1),(2, 4),(1, 1),( 2, 4),(3, 5)
5) r (x, y) A A y x ; A 1, 2, 3
6) r (x, y) 3y 4 0
7) r (x, y) x 7
8) r (x, y) x y2

9) r (x, y) y 2 x 0 y2 x 0}
10) r (x, y) y 25 x2

11) r (x, y) x3 y3 1

12) r (x, y) x y 1
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1)

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122
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3. f Df = {-2, -1, 0, 1, 2} f

1) f(x) = x2

2) f(x) = 2x
x2 1

3) f(x) = x + 2

4) f(x) = x + 1

123

4.

1) g(x) = x2 - 2x

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124

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2) f(x) = 2x
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3) f(x) = x + 2

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4) f(x) = x + 1

f = (-2, 1), (-1, 0), (0, 1), (1, 2), (2, 3)

4.
1) g(x) = x2 - 2x

(1) g(2)=0

(2) g(-3)=15

2) f(s) = 1
s+1

(1) f(4)= 1

5

(2) f(0)=1

129

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136

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2 y x2 140
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147

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4) y = x - 2 8) y = 2x2
5) y = x + 2 9) y = x
10) y = x + 1

6 148

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2) y = 2x + 1 Rr R

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4) y = x - 2 y
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5) y = x + 2 y
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149

6) y = x2

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y = x2 - 1 Rr y y 1
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8) y = 2x2

y = 2x2 y

x R

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y = 2x2