search points attachment profile arrow left arrow right star heart verified symbols equation arrow-down question mark check menu accountancyadministrationagriculturalalgebraallarabicartart_musicbelarusbelarus_altbiologybusinesscatalachemistrychineseeconomicsegzamenglishentrepreneurshipenvironmentethicseuskarafirst_aidfrenchgalegogeographygeologygeometrygermangrammarhealthhistoryindia_langindonesian_langinformaticsitalianjapanesekazachkazach_altkoreanlanguagelatinlawlife_scienceliteraturelogicmathematicsmusicnigerian_langother_languagesotherspedagogicsphilosophyphysical_educationphysicspoliticspsychologyreligionrpa_langrussianrussian_altsciencesecurityskillssocial_sciencesociologyspanishstatisticstechnologytourismtrafficukrainianukrainian_altukrainian_literaturewos_civilisation accountancyadministrationagriculturalalgebraall_1arabicartart_music_2belarusbelarus_altbiologybusiness_2catalachemistry_1chineseeconomicsexam_3englishentrepreneurshipenvironment_2ethicseuskarasecurity_1frenchgalegogeography_4geology_4geometrygermangrammarhealthhistoryindia-langindonesian-langinformaticsitalianjapanesekazachAsset 230koreanlanguagelatinlawlife-scienceliteraturelogic_2mathematicsmusicnigerian-langotherlanguagesother_1pedagogicsphilosophyphysical_educationphysicspoliticspsychologyreligion_1rpa-langrussianrussian_altsciencesecurity_3_mskills_1allsocial_science_5_msociologyspanishstatisticstechnologytourismtrafficukrainianukrainian_altukrainian_literaturewos_civilisation

Ответ

Ответ дан
utis

Начнём по отдельности:

a (-5;3;4); a = -5i + 3j + 4k

b (2;-1;4) b = 2j -j + 4k

Найдём 5a, ( 5 * (-5); 5 * 3; 5 * 4)

5a ( -25, 15, 20)

Найдём 2b, ( 2 * 2; 2 * (- 1); 2 * 4)

2b (4;-2;8)

5a + 2b = (-25 + 4; 15 -2; 20 + 8)

5a + 2b = (-21; 13; 28)

5a - 2b = (-25 - 4; 15 + 2; 20 - 8)

5a - 2b = (-29;17;12)

Ответ

Ответ дан
takushnir

a (-5;3;4); a = -5i + 3j + 4k

b (2;-1;4) b=2j-j+4k

5a(-25,15,20)

2b(4;-2;8)

5a+2b=(-25+4;15-2;20+8)=(-21;13;28)

5a - 2b = (-25 - 4; 15 + 2; 20 - 8)

5a - 2b = (-29;17;12)

Ответы и объяснения

Не тот ответ, который тебе нужен?


По всем вопросам пишите на - [email protected]