- #1
Nevermore
- 10
- 0
How would I find the direction vector of a line given in the form ax + by + cz +d =0?
Thankyou.
Thankyou.
Finding the Direction Vector of a Line: Tips and Tricks
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To find the direction vector of a line given in the form ax + by + c = 0, the slope can be derived from the equation, where a and b represent the coefficients. The direction vector can be expressed as (1, m), with m being the slope calculated from the rearranged equation. The discussion also highlights the importance of clarifying the equation type, as initial confusion arose with a plane equation. Participants engage in light banter about the age of the thread and the relevance of responses. Understanding the slope is key to determining the direction vector effectively.
- #2
TD
Homework Helper
- 1,016
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I see an equation of a plane, not a line.
- #3
Nevermore
- 10
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Damn, sorry, got carried away with my letters. I meant ax + by +c = 0. Sorry about that...
- #4
TD
Homework Helper
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For a line, (1,m) is always a directional vector where m is the slope. Can you find the slope?Nevermore said:
- #5
Nevermore
- 10
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Yeah - I thought it would be something simple like that. Thanks for your help.
- #6
TD
Homework Helper
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You're welcome 
- #7
SirAllan
- 2
- 0
Thanks for asking that Q, it helped me too
- #8
Defennder
Homework Helper
- 2,590
- 5
I don't think there's a need to thank someone who started a thread two years ago and have not posted since.
- #9
SirAllan
- 2
- 0
LORL... Thanks for pointing that out. ( At least you still logon)
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