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Аналитическая геометрия и линейная алгебра. Учебное пособие

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ǫ ȅ ǩȕȒȑȕȉ DZ ǩ ǪȇȒȚȔȕȉȇ

ǧǴǧDzǯǹǯǾǬǸDZǧȆ ǪǬǵdzǬǹǷǯȆ ǯ DzǯǴǬǰǴǧȆ ǧDzǪǬǨǷǧ

ǺȞȌȈȔȕȌ ȖȕȘȕȈȏȌ

dzȕȘȑȉȇ ǩȕȒȕȊȋȇ

ªǯȔțȗȇ-ǯȔȍȌȔȌȗȏȦ«

2024

ɍȾɄ 512.64 ȻȻɄ 22.143

ȼ

Ɋɟɰɟɧɡɟɧɬɵ:

ɞɨɤɬɨɪ ɮɢɡɢɤɨ-ɦɚɬɟɦɚɬɢɱɟɫɤɢɯ ɧɚɭɤ ɩɪɨɮɟɫɫɨɪ ɡɚɫɥɭɠɟɧɧɵɣ ɞɟɹɬɟɥɶ ɧɚɭɤɢ ɩɪɨɮɟɫɫɨɪ ɤɚɮɟɞɪɵ ɝɟɨɦɟɬɪɢɢ ɊȽɉɍ ɢɦ Ⱥ ɂ Ƚɟɪɰɟɧɚ

Ⱥɥɟɤɫɟɣ Ʌɟɨɧɢɞɨɜɢɱ ȼɟɪɧɟɪ;

ɤɚɧɞɢɞɚɬ ɬɟɯɧɢɱɟɫɤɢɯ ɧɚɭɤ ɞɨɰɟɧɬ ɡɚɦɟɫɬɢɬɟɥɶ ɞɢɪɟɤɬɨɪɚ ɂɆɈɉ ɋɉɛȽɉɍ

ȼɢɤɬɨɪ ȼɥɚɞɢɦɢɪɨɜɢɱ Ʉɪɚɫɧɨɳɟɤɨɜ

ȼɨɥɤɨɜ Ⱦ ɘ ȼ Ⱥɧɚɥɢɬɢɱɟɫɤɚɹ ɝɟɨɦɟɬɪɢɹ ɢ ɥɢɧɟɣɧɚɹ ɚɥɝɟɛɪɚ ɭɱɟɛɧɨɟ ɩɨɫɨɛɢɟ Ⱦ ɘ ȼɨɥɤɨɜ

Ʉ ȼ Ƚɚɥɭɧɨɜɚ – Ɇɨɫɤɜɚ ȼɨɥɨɝɞɚ ɂɧɮɪɚ-ɂɧɠɟɧɟɪɢɹ – 116 ɫ ɢɥ ɬɚɛɥ ,6%1 -5- - 94-2

Ɋɚɫɫɦɚɬɪɢɜɚɸɬɫɹ ɜɨɩɪɨɫɵ ɤɨɬɨɪɵɟ ɢɡɭɱɚɸɬɫɹ ɜ ɪɚɡɞɟɥɚɯ ©Ⱥɧɚɥɢɬɢɱɟɫɤɚɹ ɝɟɨ ɦɟɬɪɢɹª ɢ ©Ʌɢɧɟɣɧɚɹ ɚɥɝɟɛɪɚª ɤɭɪɫɚ ɜɵɫɲɟɣ ɦɚɬɟɦɚɬɢɤɢ ɉɨɫɨɛɢɟ ɫɨɫɬɨɢɬ ɢɡ ɬɪɟɯ ɱɚɫɬɟɣ ɜ ɤɨɬɨɪɵɯ ɫɨɞɟɪɠɚɬɫɹ ɬɟɨɪɟɬɢɱɟɫɤɢɟ ɫɜɟɞɟɧɢɹ ɩɪɢɦɟɪɵ ɜɵɩɨɥɧɟɧɢɹ ɡɚɞɚɧɢɣ ɢ ɤɨɧɬɪɨɥɶɧɵɟ ɦɚɬɟɪɢɚɥɵ ɩɨ ɪɚɫɫɦɚɬɪɢɜɚɟɦɵɦ ɬɟɦɚɦ

Ⱦɥɹ ɫɬɭɞɟɧɬɨɜ ɜɵɫɲɢɯ ɭɱɟɛɧɵɯ ɡɚɜɟɞɟɧɢɣ ɨɛɭɱɚɸɳɢɯɫɹ ɩɨ ɧɚɩɪɚɜɥɟɧɢɸ ɩɨɞ ɝɨɬɨɜɤɢ ɛɚɤɚɥɚɜɪɨɜ ©ɗɤɨɧɨɦɢɤɚª ɢ ©Ɇɟɧɟɞɠɦɟɧɬª ɚ ɬɚɤɠɟ ©Ȼɢɡɧɟɫ-ɢɧɮɨɪɦɚɬɢɤɚª ©Ɍɨɪɝɨɜɨɟɞɟɥɨª ©Ɍɨɜɚɪɨɜɟɞɟɧɢɟª ©Ƚɨɫɭɞɚɪɫɬɜɟɧɧɨɟɢɦɭɧɢɰɢɩɚɥɶɧɨɟ ɭɩɪɚɜɥɟɧɢɟª ©ɍɩɪɚɜɥɟɧɢɟ ɩɟɪɫɨɧɚɥɨɦª

ɍȾɄ 512.64 ȻȻɄ 22.143

ISBN -5- - 94-2

ȼɨɥɤɨɜ Ⱦ ɘ Ƚɚɥɭɧɨɜɚ Ʉ ȼ

 

ɂɡɞɚɬɟɥɶɫɬɜɨ ©ɂɧɮɪɚ-ɂɧɠɟɧɟɪɢɹª

 

Ɉɮɨɪɦɥɟɧɢɟ ɂɡɞɚɬɟɥɶɫɬɜɨ ©ɂɧɮɪɚ-ɂɧɠɟɧɟɪɢɹª

2

ǵǪDzǧǩDzǬǴǯǬ

 

ȼɜɟɞɟɧɢɟ...............................................................................................................

4

ɑɚɫɬɶ ɉɅɈɋɄɈɋɌɖ.........................................................................................

5

1.1. ɉɨɧɹɬɢɟ ɫɢɫɬɟɦɵ ɤɨɨɪɞɢɧɚɬ.................................................................

5

ɍɪɚɜɧɟɧɢɟ ɥɢɧɢɢ ɧɚ ɩɥɨɫɤɨɫɬɢ..........................................................

11

ɉɪɹɦɚɹ ɧɚ ɩɥɨɫɤɨɫɬɢ...........................................................................

13

ɑɚɫɬɶ ɉɊɈɋɌɊȺɇɋɌȼɈ................................................................................

24

ɋɢɫɬɟɦɵ ɤɨɨɪɞɢɧɚɬ ɜ ɩɪɨɫɬɪɚɧɫɬɜɟ...................................................

24

ȼɟɤɬɨɪɵ................................................................................................

 

ɉɥɨɫɤɨɫɬɶ.............................................................................................

 

ɉɪɹɦɚɹ ɜ ɩɪɨɫɬɪɚɧɫɬɜɟ........................................................................

45

ɑɚɫɬɶ ɅɂɇȿɃɇȺə ȺɅȽȿȻɊȺ.......................................................................

52

Ʉɨɦɩɥɟɤɫɧɵɟ ɱɢɫɥɚ.............................................................................

52

Ʌɢɧɟɣɧɵɟ ɩɪɨɫɬɪɚɧɫɬɜɚ......................................................................

64

Ɇɚɬɪɢɰɵ ɢ ɨɩɟɪɚɰɢɢ ɧɚɞ ɧɢɦɢ ..........................................................

 

Ɉɩɪɟɞɟɥɢɬɟɥɢ ......................................................................................

 

Ɋɚɧɝ ɦɚɬɪɢɰɵ.......................................................................................

 

ɋɢɫɬɟɦɵ ɥɢɧɟɣɧɵɯ ɭɪɚɜɧɟɧɢɣ...........................................................

92

Ɉɛɪɚɬɧɚɹ ɦɚɬɪɢɰɚ..............................................................................

 

ɋɨɛɫɬɜɟɧɧɵɟ ɡɧɚɱɟɧɢɹ ɢ ɫɨɛɫɬɜɟɧɧɵɟ ɜɟɤɬɨɪɵ ɦɚɬɪɢɰɵ...............

 

Ȼɢɛɥɢɨɝɪɚɮɢɱɟɫɤɢɣ ɫɩɢɫɨɤ.............................................................................

111

ɂɧɬɟɪɧɟɬ-ɪɟɫɭɪɫɵ............................................................................................

112

3

ǩǩǬǫǬǴǯǬ

ɍɱɟɛɧɨɟ ɩɨɫɨɛɢɟ ɩɨɫɜɹɳɟɧɨ ɪɚɡɞɟɥɚɦ ɜɭɡɨɜɫɤɨɣ ɞɢɫɰɢɩɥɢɧɵ ©ȼɵɫɲɚɹ ɦɚɬɟɦɚɬɢɤɚª ɞɥɹ ɫɬɭɞɟɧɬɨɜ ɷɤɨɧɨɦɢɱɟɫɤɢɯ ɫɩɟɰɢɚɥɶɧɨɫɬɟɣ ɜ ɤɨɬɨɪɵɯ ɢɡɭɱɚ ɟɬɫɹ ɚɧɚɥɢɬɢɱɟɫɤɚɹ ɝɟɨɦɟɬɪɢɹ ɢ ɥɢɧɟɣɧɚɹ ɚɥɝɟɛɪɚ ɋɨɞɟɪɠɚɧɢɟ ɩɨɫɨɛɢɹ ɨɪɢ ɟɧɬɢɪɨɜɚɧɨ ɧɚ ɩɪɨɝɪɚɦɦɭ ɤɭɪɫɚ ©ȼɵɫɲɚɹ ɦɚɬɟɦɚɬɢɤɚª ɱɢɬɚɟɦɨɝɨ ɨɞɧɢɦ ɢɡ ɚɜɬɨɪɨɜ ɜ ɉɨɥɢɬɟɯɧɢɱɟɫɤɨɦ ɭɧɢɜɟɪɫɢɬɟɬɟ ɉɟɬɪɚ ȼɟɥɢɤɨɝɨ ɉɨɫɨɛɢɟ ɩɪɟɞɧɚ ɡɧɚɱɟɧɨ ɤɚɤ ɞɥɹ ɫɚɦɨɫɬɨɹɬɟɥɶɧɨɣ ɪɚɛɨɬɵ ɫɬɭɞɟɧɬɨɜ ɩɪɢ ɩɨɞɝɨɬɨɜɤɟ ɤ ɤɨɧ ɬɪɨɥɶɧɵɦ ɦɟɪɨɩɪɢɹɬɢɹɦ ɩɨ ɪɚɫɫɦɚɬɪɢɜɚɟɦɵɦ ɬɟɦɚɦ ɬɚɤ ɢ ɞɥɹ ɩɪɟɩɨɞɚɜɚɬɟ ɥɟɣ ɩɨɫɤɨɥɶɤɭ ɫɨɞɟɪɠɢɬ ɜɚɪɢɚɧɬɵ ɤɨɧɬɪɨɥɶɧɵɯ ɦɚɬɟɪɢɚɥɨɜ Ʉɨɧɬɪɨɥɶɧɵɟ ɦɚɬɟɪɢɚɥɵɦɨɝɭɬ ɛɵɬɶɢɫɩɨɥɶɡɨɜɚɧɵɩɪɟɩɨɞɚɜɚɬɟɥɟɦɞɥɹɨɰɟɧɤɢ ɭɪɨɜɧɹɫɮɨɪ ɦɢɪɨɜɚɧɧɨɫɬɢ ɦɚɬɟɦɚɬɢɱɟɫɤɢɯ ɤɨɦɩɟɬɟɧɰɢɣ ɫɬɭɞɟɧɬɨɜ ɩɨɪɚɡɥɢɱɧɵɦ ɝɪɭɩɩɚɦ ɧɚɩɪɚɜɥɟɧɢɣ ɩɨɞɝɨɬɨɜɤɢ ɛɚɤɚɥɚɜɪɨɜ

ɉɨɫɨɛɢɟ ɫɨɫɬɨɢɬ ɢɡ ɬɪɟɯ ɱɚɫɬɟɣ ȼ ɩɟɪɜɨɣ ɱɚɫɬɢ ɪɚɫɫɦɚɬɪɢɜɚɟɬɫɹ ɚɧɚɥɢ ɬɢɱɟɫɤɚɹ ɝɟɨɦɟɬɪɢɹ ɩɥɨɫɤɨɫɬɢ ɜɨ ɜɬɨɪɨɣ ɱɚɫɬɢ – ɝɟɨɦɟɬɪɢɹ ɩɪɨɫɬɪɚɧɫɬɜɚ ɡɞɟɫɶ ɪɚɫɫɦɚɬɪɢɜɚɸɬɫɹ ɬɨɥɶɤɨ ɨɛɴɟɤɬɵ ɩɟɪɜɨɝɨ ɩɨɪɹɞɤɚ ɜɜɢɞɭ ɨɝɪɚɧɢɱɟɧɧɨ ɫɬɢ ɜɪɟɦɟɧɢ ɜɵɞɟɥɹɟɦɨɝɨɜ ɨɛɳɟɦ ɤɭɪɫɟ ɧɚ ɚɧɚɥɢɬɢɱɟɫɤɭɸ ɝɟɨɦɟɬɪɢɸ ȼ ɬɪɟ ɬɶɟɣ ɱɚɫɬɢ ɩɨɫɨɛɢɹ ɪɚɫɫɦɚɬɪɢɜɚɸɬɫɹ ɧɟɤɨɬɨɪɵɟ ɜɨɩɪɨɫɵ ɥɢɧɟɣɧɨɣ ɚɥɝɟɛɪɵ ȼ ɬɟɤɫɬɟ ɩɪɢɜɨɞɹɬɫɹ ɤɪɚɬɤɢɟ ɬɟɨɪɟɬɢɱɟɫɤɢɟ ɫɜɟɞɟɧɢɹ ɢ ɞɚɸɬɫɹ ɦɟɬɨɞɢɱɟɫɤɢɟ ɭɤɚɡɚɧɢɹ ɩɨ ɜɵɩɨɥɧɟɧɢɸ ɩɪɚɤɬɢɱɟɫɤɢɯ ɡɚɞɚɧɢɣ

ȼ ɤɨɧɰɟ ɩɨɫɨɛɢɹ ɩɪɢɜɨɞɢɬɫɹ ɫɩɢɫɨɤ ɪɟɤɨɦɟɧɞɭɟɦɨɣ ɥɢɬɟɪɚɬɭɪɵ ɢ ɢɧɬɟɪ ɧɟɬ-ɪɟɫɭɪɫɨɜ ɍɱɟɛɧɢɤɢ > – 9– @ ɦɨɝɭɬ ɩɪɟɞɨɫɬɚɜɢɬɶ ɫɬɭɞɟɧɬɭ ɛɨɥɟɟ ɩɨ ɞɪɨɛɧɵɣ ɦɚɬɟɪɢɚɥ ɩɪɢ ɢɡɭɱɟɧɢɢ ɚɧɚɥɢɬɢɱɟɫɤɨɣ ɝɟɨɦɟɬɪɢɢ ɢ ɥɢɧɟɣɧɨɣ ɚɥ ɝɟɛɪɵ Ⱦɨɩɨɥɧɢɬɟɥɶɧɵɟ ɡɚɞɚɱɢ ɩɨ ɪɚɫɫɦɚɬɪɢɜɚɟɦɨɣ ɬɟɦɚɬɢɤɟ ɦɨɠɧɨ ɧɚɣɬɢ ɜ ɡɚɞɚɱɧɢɤɚɯ > @

4

ǾȇȘșȣ ǶDzǵǸDZǵǸǹȃ

ǶȕȔȦșȏȌ ȘȏȘșȌȓȢ ȑȕȕȗȋȏȔȇș

Ɉɩɪɟɞɟɥɟɧɢɟ Ƚɨɜɨɪɹɬ ɱɬɨ ɧɚ ɩɪɹɦɨɣ l ɡɚɞɚɧɚ ɫɢɫɬɟɦɚ ɤɨɨɪɞɢɧɚɬ ɟɫɥɢ

1)ɜɵɛɪɚɧɚ ɬɨɱɤɚ Ɉ ɤɨɬɨɪɚɹ ɧɚɡɵɜɚɟɬɫɹ ɧɚɱɚɥɨɦ ɤɨɨɪɞɢɧɚɬ

2)ɜɵɛɪɚɧɨ ɩɨɥɨɠɢɬɟɥɶɧɨɟ ɧɚɩɪɚɜɥɟɧɢɟ

3)ɜɵɛɪɚɧɚ ɟɞɢɧɢɰɚ ɦɚɫɲɬɚɛɚ ɟ.

ǷȏȘ

Ʉɨɨɪɞɢɧɚɬɨɣ ɬɨɱɤɢ Ɇ ɥɟɠɚɳɟɣ ɧɚ ɩɪɹɦɨɣ l ɧɚɡɵɜɚɸɬ ɱɢɫɥɨ x ɤɨɬɨɪɨɟ ɨɩɪɟɞɟɥɹɟɬɫɹ ɫɥɟɞɭɸɳɢɦ ɨɛɪɚɡɨɦ

1)ɚɛɫɨɥɸɬɧɚɹ ɜɟɥɢɱɢɧɚ x ɪɚɜɧɚ ɨɬɧɨɲɟɧɢɸ ɞɥɢɧɵ ɨɬɪɟɡɤɚ >OM @ ɤ ɞɥɢɧɟ ɟɞɢɧɢɱɧɨɝɨ ɨɬɪɟɡɤɚ e:

xOMe ;

2)ɤɨɨɪɞɢɧɚɬɚ ɯ ɩɨɥɨɠɢɬɟɥɶɧɚ ɟɫɥɢ ɧɚɩɪɚɜɥɟɧɢɟ ɨɬ ɬɨɱɤɢ Ɉ ɤ ɬɨɱɤɟ Ɇ ɫɨɜɩɚɞɚɟɬ ɫ ɩɨɥɨɠɢɬɟɥɶɧɵɦ ɧɚɩɪɚɜɥɟɧɢɟɦ ɧɚ ɩɪɹɦɨɣ ɢ ɨɬɪɢɰɚɬɟɥɶɧɚ ɜ ɩɪɨɬɢɜɨɩɨɥɨɠɧɨɦ ɫɥɭɱɚɟ

ɉɭɫɬɶɧɚɩɪɹɦɨɣɡɚɞɚɧɨɞɜɟɬɨɱɤɢ A(x1) ɢ B(x2). Ɋɚɫɫɬɨɹɧɢɟɦɟɠɞɭɷɬɢɦɢ ɬɨɱɤɚɦɢ ɜɵɱɢɫɥɹɟɬɫɹ ɩɨ ɮɨɪɦɭɥɟ

 

 

AB

 

 

 

 

 

 

x1 x2

 

.

(1.1.1)

 

 

 

 

 

 

ɉɪɢɦɟɪ ɉɭɫɬɶ A B ɬɨɝɞɚ

 

 

AB

 

 

 

1 ( 3)

 

4.

 

 

 

 

 

 

ɉɭɫɬɶ ɞɥɹ ɡɚɞɚɧɧɵɯ ɬɨɱɟɤ A(x1) ɢ B(x2)

x2 x1 ɬɪɟɛɭɟɬɫɹ ɧɚɣɬɢ

ɬɨɱɤɭ C ɥɟɠɚɳɭɸ ɦɟɠɞɭ ɧɢɦɢ ɢ ɞɟɥɹɳɭɸ ɨɬɪɟɡɨɤ >A B@ ɜ ɨɬɧɨɲɟɧɢɢ M:

 

 

 

 

 

AC

 

 

M

(1.1.2)

 

 

 

 

 

 

 

 

 

 

 

CB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

ɝɞɟ M – ɡɚɞɚɧɧɨɟ ɜɟɳɟɫɬɜɟɧɧɨɟ ɱɢɫɥɨ Ɉɛɨɡɧɚɱɢɦ ɧɟɢɡɜɟɫɬɧɭɸ ɤɨɨɪɞɢɧɚɬɭ ɬɨɱɤɢ C ɤɚɤ x ɢ ɡɚɩɢɲɟɦ ɪɚɜɟɧɫɬɜɨ ɱɟɪɟɡ ɤɨɨɪɞɢɧɚɬɵ

 

x x1

M.

 

 

x x

 

 

 

 

 

2

 

 

 

 

Ɉɬɫɸɞɚ ɩɨɥɭɱɚɟɦ

 

 

 

x

x1 Mx2

.

(1.1.3)

 

 

 

1 M

 

ɉɪɢɦɟɪ ɉɭɫɬɶ A B ɇɚɣɞɟɦ ɫɟɪɟɞɢɧɭ ɨɬɪɟɡɤɚ >A B@ ɉɨɞ ɫɬɚɜɥɹɹ ɜ ɮɨɪɦɭɥɭ M 1 ɢ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɟɤ A ɢ B ɩɨɥɭɱɚɟɦ ɤɨɨɪɞɢ ɧɚɬɭ ɫɟɪɟɞɢɧɵ ɨɬɪɟɡɤɚ

x 2 6 2. 1 1

Ɉɩɪɟɞɟɥɟɧɢɟ ɇɚ ɩɥɨɫɤɨɫɬɢ ɡɚɞɚɧɚ ɫɢɫɬɟɦɚ ɤɨɨɪɞɢɧɚɬ ɟɫɥɢ

1)ɡɚɞɚɧɵ ɞɜɟ ɜɡɚɢɦɧɨ ɩɟɪɩɟɧɞɢɤɭɥɹɪɧɵɟ ɩɪɹɦɵɟ ɬɨɱɤɚ ɢɯ ɩɟɪɟɫɟɱɟ ɧɢɹ ɧɚɡɵɜɚɟɬɫɹ ɧɚɱɚɥɨɦ ɤɨɨɪɞɢɧɚɬ Ɉ);

2)ɧɚ ɤɚɠɞɨɣ ɢɡ ɩɪɹɦɵɯ ɜɵɛɪɚɧɨ ɩɨɥɨɠɢɬɟɥɶɧɨɟ ɧɚɩɪɚɜɥɟɧɢɟ

3)ɜɵɛɪɚɧɚ ɟɞɢɧɢɰɚ ɦɚɫɲɬɚɛɚ e .

ǷȏȘ

ɍɤɚɡɚɧɧɵɟ ɜ ɨɩɪɟɞɟɥɟɧɢɢ ɩɪɹɦɵɟ ɧɚɡɵɜɚɸɬɫɹ ɤɨɨɪɞɢɧɚɬɧɵɦɢ ɨɫɹɦɢ Ɉɞɧɚɢɡ ɧɢɯɧɚɡɵɜɚɟɬɫɹɨɫɶɸɚɛɫɰɢɫɫ ɨɫɶOx ɞɪɭɝɚɹ– ɨɫɶɸ ɨɪɞɢɧɚɬ ɨɫɶ Oy). ɉɭɫɬɶ M – ɬɨɱɤɚ ɩɥɨɫɤɨɫɬɢ Ɉɩɭɫɬɢɦ ɢɡ ɷɬɨɣ ɬɨɱɤɢ ɩɟɪɩɟɧɞɢɤɭɥɹɪɵ ɧɚ ɨɫɢ Ox ɢ Oy Ɍɨɱɤɢ P ɢ Q ɩɟɪɟɫɟɱɟɧɢɹ ɩɟɪɩɟɧɞɢɤɭɥɹɪɨɜ ɫ ɤɨɨɪɞɢɧɚɬɧɵɦɢ ɨɫɹɦɢ ɛɭ ɞɟɦ ɧɚɡɵɜɚɬɶ ɩɪɨɟɤɰɢɹɦɢ ɬɨɱɤɢ M ɧɚ ɫɨɨɬɜɟɬɫɬɜɭɸɳɢɟ ɨɫɢ ɉɭɫɬɶ x – ɤɨɨɪ ɞɢɧɚɬɚ ɬɨɱɤɢ P ɧɚ ɨɫɢ Ox ɚ y – ɤɨɨɪɞɢɧɚɬɚ ɬɨɱɤɢ Q ɧɚ ɨɫɢ Oy ɍɩɨɪɹɞɨɱɟɧɧɚɹ ɩɚɪɚ ɱɢɫɟɥ (x y) ɧɚɡɵɜɚɟɬɫɹ ɤɨɨɪɞɢɧɚɬɚɦɢ ɬɨɱɤɢ M ɑɢɫɥɨ x – ɚɛɫɰɢɫɫɚ ɬɨɱɤɢ M y – ɨɪɞɢɧɚɬɚɬɨɱɤɢM Ɇɟɠɞɭɬɨɱɤɚɦɢɩɥɨɫɤɨɫɬɢ ɢɩɚɪɚɦɢ ɤɨɨɪɞɢɧɚɬ ɫɭɳɟɫɬɜɭɟɬ ɜɡɚɢɦɧɨ ɨɞɧɨɡɧɚɱɧɨɟ ɫɨɨɬɜɟɬɫɬɜɢɟ ɤɚɠɞɨɣ ɬɨɱɤɟ ɫɨɨɬɜɟɬɫɬɜɭɟɬ ɟɞɢɧɫɬɜɟɧɧɚɹ ɩɚɪɚ ɤɨɨɪɞɢɧɚɬ ɢ ɤɚɠɞɨɣ ɩɚɪɟ ɤɨɨɪɞɢɧɚɬ ɫɨɨɬɜɟɬɫɬɜɭɟɬ ɟɞɢɧ ɫɬɜɟɧɧɚɹ ɬɨɱɤɚ ɩɥɨɫɤɨɫɬɢ

6

ɉɭɫɬɶ ɧɚ ɩɥɨɫɤɨɫɬɢ ɡɚɞɚɧɨ ɞɜɟ ɬɨɱɤɢ A x1 y1 ɢ B x2 y2 ɇɚɣɞɟɦ ɪɚɫ ɫɬɨɹɧɢɟ ɦɟɠɞɭ ɷɬɢɦɢ ɬɨɱɤɚɦɢ ɉɨɫɬɪɨɢɦ ɩɪɹɦɭɸ ɩɪɨɯɨɞɹɳɭɸ ɱɟɪɟɡ ɬɨɱɤɭ A ɩɚɪɚɥɥɟɥɶɧɨ ɨɫɢ Ox ɢ ɱɟɪɟɡ ɬɨɱɤɭ B – ɩɚɪɚɥɥɟɥɶɧɨ ɨɫɢ Oy Ɍɨɱɤɭ ɢɯ ɩɟɪɟɫɟ ɱɟɧɢɹ ɨɛɨɡɧɚɱɢɦ ɤɚɤ C.

ǷȏȘ

Ɉɬɪɟɡɨɤ AB – ɝɢɩɨɬɟɧɭɡɚ ɩɪɹɦɨɭɝɨɥɶɧɨɝɨ ɬɪɟɭɝɨɥɶɧɢɤɚ ABC. Ʌɟɝɤɨ ɜɢ ɞɟɬɶ ɱɬɨ ɞɥɢɧɵ ɟɝɨ ɤɚɬɟɬɨɜ AC x2 x1 BC y2 y1 . ɉɨ ɬɟɨɪɟɦɟ ɉɢɮɚ ɝɨɪɚ ɩɨɥɭɱɚɟɦ ɞɥɢɧɭ ɝɢɩɨɬɟɧɭɡɵ

AB

 

(x

x )2

( y

2

y )2 .

(1.1.4)

 

 

 

2

1

 

1

 

ɉɪɢɦɟɪɇɚɣɞɟɦ ɪɚɫɫɬɨɹɧɢɟ ɦɟɠɞɭ ɬɨɱɤɚɦɢ A ɢ B :

AB (4 1)2 (5 1)2 5.

ɉɭɫɬɶ ɞɥɹ ɡɚɞɚɧɧɵɯ ɬɨɱɟɤ A x1 y1 ɢ B x2 y2 ɬɪɟɛɭɟɬɫɹ ɧɚɣɬɢ ɬɨɱɤɭ C ɥɟɠɚɳɭɸ ɦɟɠɞɭ ɧɢɦɢ ɢ ɞɟɥɹɳɭɸ ɨɬɪɟɡɨɤ >A B@ ɜ ɡɚɞɚɧɧɨɦ ɨɬɧɨɲɟɧɢɢ M:

CBAC M.

Ɉɛɨɡɧɚɱɢɦ ɧɟɢɡɜɟɫɬɧɵɟ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɤɢ C ɤɚɤ (x y). Ɉɩɭɫɬɢɦ ɢɡ ɬɨ ɱɟɤ A B C ɩɟɪɩɟɧɞɢɤɭɥɹɪɵ ɧɚ ɨɫɶ Ox ɢ ɨɛɨɡɧɚɱɢɦ ɩɪɨɟɤɰɢɢ ɷɬɢɯ ɬɨɱɟɤ P1 P2 P ɫɨɨɬɜɟɬɫɬɜɟɧɧɨ

ɉɪɹɦɵɟ AP1 BP2 ɢ CP ɩɚɪɚɥɥɟɥɶɧɵ ɢ ɫɥɟɞɨɜɚɬɟɥɶɧɨ

AC P1P .

CB PP2

Ɉɬɪɟɡɨɤ >P1 P2@ ɩɪɢɧɚɞɥɟɠɢɬ ɤɨɨɪɞɢɧɚɬɧɨɣ ɩɪɹɦɨɣ ɢ ɤɨɨɪɞɢɧɚɬɭ x ɬɨɱɤɢ P ɞɟɥɹɳɟɣ ɟɝɨ ɜ ɨɬɧɨɲɟɧɢɢ M ɦɨɠɧɨ ɧɚɣɬɢ ɩɨ ɮɨɪɦɭɥɟ ɇɚɣɞɟɧ ɧɚɹ ɜɟɥɢɱɢɧɚ ɹɜɥɹɟɬɫɹ ɢɫɤɨɦɨɣ ɚɛɫɰɢɫɫɨɣ ɬɨɱɤɢ C Ⱥɧɚɥɨɝɢɱɧɨ ɦɨɠɧɨ ɧɚɣɬɢ

7

ɜɬɨɪɭɸ ɤɨɨɪɞɢɧɚɬɭ ɷɬɨɣ ɬɨɱɤɢ Ɍ ɨ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɤɢ C ɧɚɯɨɞɢɦ ɩɨ ɮɨɪ ɦɭɥɚɦ

x

x1 Mx2

 

y

y1 My2

 

(1.1.5)

 

 

 

1 M

 

1 M

 

 

 

ǷȏȘ

ɉɪɢɦɟɪɉɭɫɬɶ

A B ɇɚɣɞɟɦ ɫɟɪɟɞɢɧɭ ɨɬɪɟɡɤɚ >A B@

ɉɨɞɫɬɚɜɥɹɹ ɜ ɮɨɪɦɭɥɭ (1.1.5) M 1 ɢ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɟɤ A ɢ B ɩɨɥɭɱɚɟɦ ɤɨɨɪ

ɞɢɧɚɬɵ ɫɟɪɟɞɢɧɵ ɨɬɪɟɡɤɚ

 

 

 

x

1 3

y

2 ( 4)

 

1 1

 

 

1 1

 

Ɉɩɪɟɞɟɥɟɧɢɟ Ȼɭɞɟɦ ɝɨɜɨɪɢɬɶ ɱɬɨɧɚ ɩɥɨɫɤɨɫɬɢ ɡɚɞɚɧɚ ɩɨɥɹɪɧɚɹ ɫɢ ɫɬɟɦɚ ɤɨɨɪɞɢɧɚɬ ɟɫɥɢ

1)ɡɚɞɚɧɚ ɬɨɱɤɚ O ɧɚɡɵɜɚɟɦɚɹ ɩɨɥɸɫɨɦ

2)ɡɚɞɚɧ ɥɭɱ >OP) ɧɚɡɵɜɚɟɦɵɣ ɩɨɥɹɪɧɨɣ ɩɨɥɭɨɫɶɸ

3)ɜɵɛɪɚɧɚ ɟɞɢɧɢɰɚ ɦɚɫɲɬɚɛɚ e.

ǷȏȘ

ɉɨɥɹɪɧɵɦɢ ɤɨɨɪɞɢɧɚɬɚɦɢ ɬɨɱɤɢ M ɩɥɨɫɤɨɫɬɢ ɧɚɡɵɜɚɸɬɫɹ ɩɨɥɹɪɧɵɣ ɪɚ ɞɢɭɫ ɪɚɜɧɵɣ ɪɚɫɫɬɨɹɧɢɸ ɨɬ ɬɨɱɤɢ O ɞɨ ɬɨɱɤɢ M: r OM ; ɩɨɥɹɪɧɵɣ ɭɝɨɥ –

ɭɝɨɥ K ɧɚ ɤɨɬɨɪɵɣ ɧɭɠɧɨ ɩɨɜɟɪɧɭɬɶ ɥɭɱ >OP) ɞɥɹ ɬɨɝɨ ɱɬɨɛɵ ɨɧ ɫɨɜɩɚɥ ɫ ɥɭɱɨɦ >OM).

Ʉɚɠɞɨɣ ɬɨɱɤɟ M ɩɥɨɫɤɨɫɬɢ ɫɨɨɬɜɟɬɫɬɜɭɟɬ ɟɞɢɧɫɬɜɟɧɧɨɟ ɡɧɚɱɟɧɢɟ ɩɨɥɹɪ ɧɨɝɨ ɪɚɞɢɭɫɚ r ɉɨɥɹɪɧɵɣ ɭɝɨɥ K ɨɩɪɟɞɟɥɟɧ ɫ ɬɨɱɧɨɫɬɶɸ ɞɨ ɩɟɪɢɨɞɚ Q

8

ɨɛɵɱɧɨ ɜɵɛɢɪɚɸɬ K Q Q@ ɤɪɨɦɟ ɬɨɱɤɢ ɫɨɜɩɚɞɚɸɳɟɣ ɫ ɩɨɥɸɫɨɦ Ⱦɥɹ ɷɬɨɣ ɬɨɱɤɢ r ɚ ɭɝɨɥ K ɧɟ ɨɩɪɟɞɟɥɟɧ ɍɩɨɪɹɞɨɱɟɧɧɨɣ ɩɚɪɟ ɱɢɫɟɥ r K ɫɨ

ɨɬɜɟɬɫɬɜɭɟɬ ɟɞɢɧɫɬɜɟɧɧɚɹ ɬɨɱɤɚ ɩɥɨɫɤɨɫɬɢ M.

ɉɭɫɬɶ ɧɚ ɩɥɨɫɤɨɫɬɢ ɨɞɧɨɜɪɟɦɟɧɧɨ ɡɚɞɚɧɵ ɩɨɥɹɪɧɚɹ ɢ ɞɟɤɚɪɬɨɜɚ ɩɪɹɦɨ ɭɝɨɥɶɧɚɹ ɫɢɫɬɟɦɵ ɤɨɨɪɞɢɧɚɬ ɩɪɢɱɟɦ ɧɚɱɚɥɨ ɞɟɤɚɪɬɨɜɨɣ ɫɢɫɬɟɦɵ ɤɨɨɪɞɢɧɚɬ ɫɨɜɩɚɞɚɟɬ ɫ ɩɨɥɸɫɨɦ ɚ ɩɨɥɹɪɧɚɹ ɨɫɶ ɥɟɠɢɬ ɧɚ ɨɫɢ ɚɛɫɰɢɫɫ ɉɭɫɬɶ ɬɨɱɤɚ M ɢɦɟɟɬ ɞɟɤɚɪɬɨɜɵ ɤɨɨɪɞɢɧɚɬɵ (x y) ɢ ɩɨɥɹɪɧɵɟ ɤɨɨɪɞɢɧɚɬɵ r K ɉɨ ɢɡɜɟɫɬ ɧɵɦ ɩɨɥɹɪɧɵɦ ɤɨɨɪɞɢɧɚɬɚɦ r K ɦɨɠɧɨ ɧɚɣɬɢ ɞɟɤɚɪɬɨɜɵ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɤɢɫɦ ɪɢɫ

£¦x r cosK

¦ (1.1.6)

¤

¦¦¥y r sinK

ǷȏȘ

ȿɫɥɢ ɡɚɞɚɧɵ ɞɟɤɚɪɬɨɜɵ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɤɢ (x y) ɬɨ ɩɨɥɹɪɧɵɣ ɪɚɞɢɭɫ

ɧɚɯɨɞɢɦ ɩɨ ɮɨɪɦɭɥɟ

 

 

r

x2 y2

 

ɩɨɫɥɟ ɷɬɨɝɨ ɩɪɢ ɢɡɜɟɫɬɧɨɣ ɜɟɥɢɱɢɧɟ r ɧɚɯɨɞɢɦ ɭɝɨɥ K ɭɞɨɜɥɟɬɜɨɪɹɸɳɢɣ ɫɢɫɬɟɦɟ ɭɪɚɜɧɟɧɢɣ

ɉɪɢɦɟɪɉɭɫɬɶ ɩɨɥɹɪɧɵɟ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɤɢ M Q Ⱦɟɤɚɪɬɨɜɵ ɤɨɨɪɞɢɧɚɬɵ ɷɬɨɣ ɬɨɱɤɢ ɨɩɪɟɞɟɥɹɟɦ ɩɨ ɮɨɪɦɭɥɚɦ

£

FRV

Q

 

 

 

 

¦x

 

 

 

 

 

¦

 

 

 

 

 

 

.

¤

 

 

 

 

 

 

¦

VLQ

Q

 

 

 

 

¥¦y

 

 

 

 

ɉɪɢɦɟɪɉɭɫɬɶ ɞɟɤɚɪɬɨɜɵ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɤɢ M ɇɚɯɨɞɢɦ

ɩɨɥɹɪɧɵɣ ɪɚɞɢɭɫ r ( 2)2 ( 2)2 2

2.

ɉɨɞɫɬɚɜɥɹɹ ɧɚɣɞɟɧɧɭɸ ɜɟɥɢ

ɱɢɧɭ ɢ ɞɟɤɚɪɬɨɜɵ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɤɢ ɜ ɫɢɫɬɟɦɭ ɩɨɥɭɱɚɟɦ

£

 

 

 

2 cosK

 

¦ 2 2

 

¦

 

 

 

 

 

 

.

¤

 

 

 

 

 

 

¦

 

 

 

2 sinK

 

¦ 2 2

 

¥

 

 

 

 

 

 

 

9

Ɉɬɫɸɞɚ

 

 

 

 

 

 

 

 

£

 

2

 

 

 

¦

 

 

 

 

¦

 

 

 

 

 

 

¦cosK

 

 

 

 

 

 

 

 

 

 

¦

 

2

 

 

¦

 

 

 

¤

 

 

 

 

 

 

¦

 

2

 

 

 

 

¦

 

 

 

 

 

¦sinK

 

 

 

 

 

¦

 

 

 

 

 

3Q

¥¦

 

2

 

 

ɫɥɟɞɨɜɚɬɟɥɶɧɨ K

. ɉɨɥɹɪɧɵɟ ɤɨɨɪɞɢɧɚɬɵ ɬɨɱɤɢ M Q .

4

 

 

 

 

 

 

Ɍɟɤɫɬ ɡɚɞɚɧɢɹ Ɍɨɱɤɢ M1 r1 K1

ɢ M2 r2 K2 ɡɚɞɚɧɵ ɫɜɨɢɦɢ ɩɨɥɹɪ

ɧɵɦɢ ɤɨɨɪɞɢɧɚɬɚɦɢ ɇɚɣɬɢ ɞɟɤɚɪɬɨɜɵ ɤɨɨɪɞɢɧɚɬɵ ɷɬɢɯ ɬɨɱɟɤ ɢ ɫɟɪɟɞɢɧɭ ɨɬ ɪɟɡɤɚ >M1 M2@

ȼɚɪɢɚɧɬɵ ɡɚɞɚɧɢɹ ʋ

ʋ

 

r1

K1

 

r2

K2

1

2

3

S

4

3

S

 

 

 

 

 

 

 

2

2

2

S

6

3

S

3

2

3

S

4

3

S

4

4

3

S

2

3

S

5

6

3

S

2

3

S

6

4

3

S

2 2

S

 

2

3

S

4

3

S

 

6

3

S

4

3

S

9

2

3

S

2 2

S

 

 

4

S

 

2

S

11

2

2

S

4 2

S

12

 

2

S

2

3

S

13

4

2

S

 

2

S

14

 

3

S

2 2

S

15

4

2

S

 

2

Q

16

2

3

S

 

2

S

 

 

3

S

 

1

S

 

2

2

S

 

2

S

19

 

2

Q

2

3

S

 

 

2

S

 

3

S

21

 

2

S

2

3

S

22

 

2

S

2 2

S

23

4

3

S

 

2

Q

24

2

2

S

4

3

S

10

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