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October 11th, 2018, 12:50 AM   #1
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Vector algebra

the segment bounded by points A (-1, 8, -3) and in (9, -7, -2) is divided by points M1, M2, M3, M4 into five equal parts. find the coordinates of points M1 and M3.

Last edited by skipjack; October 11th, 2018 at 06:05 AM. Reason: to change "." to ", "
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October 11th, 2018, 03:11 AM   #2
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As written, it cannot be done.
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October 11th, 2018, 03:30 AM   #3
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However, if I make one change and make one assumption, then I get

$\displaystyle M_1=(1,5,-2.8)$ and $\displaystyle M_3=(5,-1,-2.4).$.

On the other hand, you might actually mean what you wrote.

P.S. to moderators: why isn't the latex parsing properly?

Last edited by skipjack; October 11th, 2018 at 06:06 AM. Reason: to disable smilies in this post and correct typo
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October 11th, 2018, 03:41 PM   #4
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Quote:
Originally Posted by mrtwhs View Post
However, if I make one change and make one assumption, then I get

$\displaystyle M_1=(1,5,-2.8)$ and $\displaystyle M_3=(5,-1,-2.4).$.

On the other hand, you might actually mean what you wrote.

P.S. to moderators: why isn't the latex parsing properly?
I got the same results you did with the question as written. What was the change that you needed to make?

Last edited by skipjack; October 11th, 2018 at 08:05 PM.
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October 12th, 2018, 12:22 PM   #5
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Skipjack edited the problem. It originally had 1.5 which he changed to 1,5. So I assumed it was a comma. The other assumption I made was that the points were given in order starting with $\displaystyle M_1$ closest to $\displaystyle A$ and going toward the unnamed point.
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