Roboguru

Vektor posisi titik  dan  adalah . Hitunglah: b.

Pertanyaan

Vektor posisi titik begin mathsize 14px style straight A left parenthesis negative 3 comma space minus 5 comma space 2 right parenthesis end style dan begin mathsize 14px style straight B left parenthesis 2 comma space minus 3 comma space 5 right parenthesis end style adalah begin mathsize 14px style a with rightwards arrow on top space d a n space b with rightwards arrow on top end style. Hitunglah:

b. begin mathsize 14px style open vertical bar b with rightwards arrow on top close vertical bar end style 

Pembahasan Soal:

Menentukan panjang vektor begin mathsize 14px style b with rightwards arrow on top end style:

open vertical bar b with rightwards arrow on top close vertical bar equals square root of 2 squared plus open parentheses negative 3 close parentheses squared plus 5 squared end root space space space space subscript blank equals square root of 4 plus 9 plus 25 end root space space space space subscript blank equals square root of 38 

Jadi, begin mathsize 14px style bottom enclose begin bold style vertical line b with rightwards arrow on top vertical line end style bold equals square root of bold 38 end enclose end style.

Pembahasan terverifikasi oleh Roboguru

Terakhir diupdate 11 Juni 2021

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