Roboguru

Diketahui vektor , , dan a. Hitunglah

Pertanyaan

Diketahui vektor begin mathsize 14px style a with rightwards arrow on top equals open parentheses table row cell negative 3 end cell row 4 end table close parentheses end style, begin mathsize 14px style b with rightwards arrow on top equals open parentheses table row 2 row 3 end table close parentheses end style, dan begin mathsize 14px style c with rightwards arrow on top equals open parentheses table row cell negative 1 end cell row 2 end table close parentheses end style

a. Hitunglah begin mathsize 14px style open vertical bar straight a with rightwards arrow on top close vertical bar comma space open vertical bar straight b with rightwards arrow on top close vertical bar comma space dan space open vertical bar straight c with rightwards arrow on top close vertical bar end style

Pembahasan Soal:

Untuk menyelesaikan soal di atas dapat kita selesaikan dengan menggunakan rumus:

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row blank blank cell vertical line a with rightwards arrow on top vertical line end cell end table equals square root of open parentheses a subscript 1 close parentheses squared plus open parentheses a subscript 2 close parentheses squared plus open parentheses a subscript 3 close parentheses squared plus... plus open parentheses a subscript n close parentheses squared end root comma space maka end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell vertical line straight a with rightwards arrow on top vertical line end cell equals cell square root of open parentheses negative 3 close parentheses squared plus open parentheses 4 close parentheses squared end root end cell row cell vertical line straight a with rightwards arrow on top vertical line end cell equals cell square root of 9 plus 16 end root end cell row cell vertical line straight a with rightwards arrow on top vertical line end cell equals cell square root of 25 end cell row cell vertical line straight a with rightwards arrow on top vertical line end cell equals 5 end table end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell vertical line b with rightwards arrow on top vertical line end cell equals cell square root of open parentheses 2 close parentheses squared plus open parentheses 3 close parentheses squared end root end cell row cell vertical line b with rightwards arrow on top vertical line end cell equals cell square root of 4 plus 9 end root end cell row cell vertical line b with rightwards arrow on top vertical line end cell equals cell square root of 13 end cell end table end style

begin mathsize 14px style table attributes columnalign right center left columnspacing 0px end attributes row cell vertical line b with rightwards arrow on top vertical line end cell equals cell square root of open parentheses negative 1 close parentheses squared plus open parentheses 2 close parentheses squared end root end cell row cell vertical line b with rightwards arrow on top vertical line end cell equals cell square root of 5 end cell end table end style

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 14 Maret 2021

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