Найти длину вектора а-b. а= 4j-2k и b= 2i-3j-k.. Created by RodionWhite. algebra-ru

Найти длину вектора а-b. а= 4j-2k и b= 2i-3j-k...

RodionWhite @RodionWhite

July 2022 1 1 Report

Найти длину вектора а-b. а= 4j-2k и b= 2i-3j-k.

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NNNLLL54

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$\vec{a}=4\vec {j}-2\vec{k}\; ,\; \; \vec{a}=(0,4,-2)\\\\\vec{b}=2\vec{i}-3\vec{j}-\vec{k}\; ,\; \; \vec{b}=(2,-3,-1)\\\\\vec{a}-\vec{b}=(0-2,4+3,-2+1)=(-2,7,-1)\\\\|\vec{a}-\vec{b}|=\sqrt{2^2+7^2+1^2}=\sqrt{54}=3\sqrt6$

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radiusy osnovanij usechennogo konusa ravny 20 i 10 smobrazuyushaya naklonena pod ug

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RodionWhite August 2022 | 0 Ответы

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