Mathematics: Find v × w if v = 3i + 8j – 6k and w = –4i – 2j – 3k.

Find v × w if v = 3i + 8j – 6k and w = –4i – 2j - id3864235341560, gutuerrezsebastian

Ответ:

thompsonjeremiah837

20.01.2022

Mathematics

vXw =-36i+33j+26k

Step-by-step explanation:

v = 3i + 8j – 6k

w = –4i – 2j – 3k

The cross product

$v X w=\left|\begin{array}{ccc}i&j&k\\3&8&-6\\-4&-2&-3\end{array}\right|$

$=i\left|\begin{array}{cc}8&-6\\-2&-3\end{array}\right|-j\left|\begin{array}{cc}3&-6\\-4&-3\end{array}\right|+k\left|\begin{array}{cc}3&8\\-4&-2\end{array}\right|\\$

$=i(-24-12)-j(-9-24)+k(-6+32)\\vXw =-36i+33j+26k$

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Ответ:

amayareyes101

27.04.2020

Mathematics

So, this equation : 2x + 3y = 12 is in standard form, so lets convert this to the slope intercept form to see the y intercept.

Slope intercept form : y = mx + b

2x + 3y = 12
-2x -2x

3y = -2x + 12
y = -2/3x + 4

Now, we can see the 'b' (aka y intercept) is 4

(0,4)

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Find v × w if v = 3i + 8j – 6k and w = –4i – 2j – 3k.

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