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Regions In The Plane To draw a region, first you have to sketch the curve.
30

11 x1 t03 05 regions in the plane (2013)

Jul 10, 2015

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Nigel Simmons
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Page 1: 11 x1 t03 05 regions in the plane (2013)

Regions In The PlaneTo draw a region, first you have to sketch the curve.

Page 2: 11 x1 t03 05 regions in the plane (2013)

Regions In The PlaneTo draw a region, first you have to sketch the curve.1) If < or > use a dotted line

Page 3: 11 x1 t03 05 regions in the plane (2013)

Regions In The PlaneTo draw a region, first you have to sketch the curve.1) If < or > use a dotted line

2) If or use a solid line

Page 4: 11 x1 t03 05 regions in the plane (2013)

Regions In The PlaneTo draw a region, first you have to sketch the curve.1) If < or > use a dotted line

2) If or use a solid line

3) Circle the point of intersection if it is NOT included (i.e. one is < or >)

Page 5: 11 x1 t03 05 regions in the plane (2013)

Regions In The PlaneTo draw a region, first you have to sketch the curve.1) If < or > use a dotted line

2) If or use a solid line

3) Circle the point of intersection if it is NOT included (i.e. one is < or >)

To calculate the region, test a point NOT on the curve.

Page 6: 11 x1 t03 05 regions in the plane (2013)

Regions In The PlaneTo draw a region, first you have to sketch the curve.1) If < or > use a dotted line

2) If or use a solid line

3) Circle the point of intersection if it is NOT included (i.e. one is < or >)

To calculate the region, test a point NOT on the curve.e.g. ( ) 3i y x

Page 7: 11 x1 t03 05 regions in the plane (2013)

Regions In The PlaneTo draw a region, first you have to sketch the curve.1) If < or > use a dotted line

2) If or use a solid line

3) Circle the point of intersection if it is NOT included (i.e. one is < or >)

To calculate the region, test a point NOT on the curve.e.g. ( ) 3i y x

y

x

3

–3

3y x

Page 8: 11 x1 t03 05 regions in the plane (2013)

Regions In The PlaneTo draw a region, first you have to sketch the curve.1) If < or > use a dotted line

2) If or use a solid line

3) Circle the point of intersection if it is NOT included (i.e. one is < or >)

To calculate the region, test a point NOT on the curve.e.g. ( ) 3i y x

y

x

3

–3

3y x test (0,0)

0 3

Page 9: 11 x1 t03 05 regions in the plane (2013)

Regions In The PlaneTo draw a region, first you have to sketch the curve.1) If < or > use a dotted line

2) If or use a solid line

3) Circle the point of intersection if it is NOT included (i.e. one is < or >)

To calculate the region, test a point NOT on the curve.e.g. ( ) 3i y x

y

x

3

–3

3y x test (0,0)

0 3

Page 10: 11 x1 t03 05 regions in the plane (2013)

2 2( ) 9ii x y

Page 11: 11 x1 t03 05 regions in the plane (2013)

2 2( ) 9ii x y y

x3

32 2 9x y

–3

–3

Page 12: 11 x1 t03 05 regions in the plane (2013)

2 2( ) 9ii x y y

x3

32 2 9x y

–3

–3

test (0,0)2 20 0 9

0 9

Page 13: 11 x1 t03 05 regions in the plane (2013)

2 2( ) 9ii x y y

x3

32 2 9x y

–3

–3

test (0,0)2 20 0 9

0 9

Page 14: 11 x1 t03 05 regions in the plane (2013)

2( ) 4ii y x

Page 15: 11 x1 t03 05 regions in the plane (2013)

2( ) 4ii y x y

x

2

2–2

24y x

Page 16: 11 x1 t03 05 regions in the plane (2013)

2( ) 4ii y x y

x

2test (0,0)

20 4 00 2

24y x

2–2

Page 17: 11 x1 t03 05 regions in the plane (2013)

2( ) 4ii y x y

x

2

2–2

test (0,0)20 4 0

0 2

24y x

Page 18: 11 x1 t03 05 regions in the plane (2013)

2( ) 4ii y x y

x

2

2–2

test (0,0)20 4 0

0 2

24y x

Page 19: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x

Page 20: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x

Page 21: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1)

Page 22: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1)

Page 23: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1) 3 4y x

Page 24: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1) 3 4y x 3 4y x

test (0,0)0 0 40 4

Page 25: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1) 3 4y x 3 4y x

test (0,0)0 0 40 4

Page 26: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1) 3 4y x 3 4y x

test (0,0)0 0 40 4

point of intersection2 3 4x x

Page 27: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1) 3 4y x 3 4y x

test (0,0)0 0 40 4

point of intersection2 3 4x x

2 3 4 01 4 0

x xx x

1 or 4x x

Page 28: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1) 3 4y x 3 4y x

test (0,0)0 0 40 4

point of intersection2 3 4x x

2 3 4 01 4 0

x xx x

1 or 4x x

( 1,1)

(4,16)

Page 29: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1) 3 4y x 3 4y x

test (0,0)0 0 40 4

point of intersection2 3 4x x

2 3 4 01 4 0

x xx x

1 or 4x x

( 1,1)

(4,16)

Exercise 3F; 3ac, 4d, 5cg, 6cd, 7, 10, 12a, 15a, 19, 20, 21a, 23*

Page 30: 11 x1 t03 05 regions in the plane (2013)

2( ) and 3 4iv y x y x y

x

2y x2y x

20 10 1

test (0,1) 3 4y x 3 4y x

test (0,0)0 0 40 4

point of intersection2 3 4x x

2 3 4 01 4 0

x xx x

1 or 4x x

( 1,1)

(4,16)