Page 397 - index

74-ɫɭɪɟɬ
4.2. Ɍɨɩɫɚɥɵ ɬΫɪɬɛɭɵɧɞɵ ɦɟɯɚɧɢɡɦɞɿ ɛΡɥΕɚΙɬɵΝ Οɲ ɬΟɪɥɿ
ɨɪɵɧɞɚɪɵɧɚ ɛɚɣɥɚɧɵɫɬɵ ɫɢɧɬɟɡɞɟɭ. Ɇɵɫɚɥɵ, ɬɨɩɫɚɥɵ ɬԧɪɬɛɭɵɧɞɵ
ABCD ɦɟɯɚɧɢɡɦɿɧɿԙ l AB ɠԥɧɟ lAD ԝɡɵɧɞɵԕɬɚɪɵ, Ⱥȼ ɛɭɵɧɵɧɵԙ
M1, M2 , M3 ɛԝɪɵɥɭ ɛԝɪɵɲɬɚɪɵ ɠԥɧɟ ɫɨɥɚɪԑɚ ɫԥɣɤɟɫ CD ɛɭɵɧɵɧɵԙ
ɛԝɪɵɥɭ ɛԝɪɵɲɬɚɪɵ \ 1, \ 2 , \ 3 ɛɟɪɿɥɫɿɧ (75-ɫɭɪɟɬ).
Ɍԝɪɚԕɬɵ CDF ɛԝɪɵɲɵɧ ɠԥɧɟ lBC , lCD ԝɡɵɧɞɵԕɬɚɪɵɧ ɚɧɵԕɬɚɭ ɤɟɪɟɤ
ɛɨɥɫɵɧ. Ȼԝɥ ɲɚɦɚɥɚɪɞɵ ɚɧɵԕɬɚɭ ԛɲɿɧ F1D ɤɟɫɿɧɞɿɫɿɧɿԙ ɨɪɧɵɦɟɧ
ɛɚɣɥɚɧɵɫɬɚԑɵ ɋ ɬɨɩɫɚɫɵ ɰɟɧɬɪɿɧɿԙ ɠɚɡɵԕɬɵԕɬɚԑɵ ɨɪɧɵɧ ɬɚɛɚɦɵɡ. Ɉɥ ԛɲɿɧ
CD ɛɭɵɧɵ ɚɪԕɵɥɵ ɚɣɧɚɥɭ ԕɨɡԑɚɥɵɫɵɧ ԕɚɪɚɫɬɵɪɚɦɵɡ. Ȼԝɥ ɤɟɡɞɟ, ȼ
ɬɨɩɫɚɫɵɧɵԙ ɰɟɧɬɪɿ ȼ1, ȼ2 ɠԥɧɟ ȼ3 ɨɪɵɧɞɚɪɵɧɚ ɨɪɧɚɥɚɫɚɞɵ. Ⱥɥ ȼ2c
ɧԛɤɬɟɫɿ, D ɧԛɤɬɟɫɿɧɟɧ B2 D ɫɵɡɵԑɵɧɚ \1 \ 2 ɛԝɪɵɲɵɦɟɧ ɠԛɪɝɿɡɿɥɝɟɧ
ɫɵɡɵԕɩɟɧ, ɪɚɞɢɭɫɵ B2 D ɲɟԙɛɟɪɞɿԙ ԕɢɵɥɵɫɭ ɧԛɤɬɟɫɿ ɛɨɥɵɩ ɬɚɛɵɥɚɞɵ.

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