 Ace United States. July 11 2008 07:25. Posts 5147 | Profile Blog | |
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 Gene United States. July 11 2008 07:34. Posts 2845 | Profile Blog |
there's an equality that states the norms of some vector equals the norm of the other times cos theta where theta is the angle between the two
its very similar to the cauchy schwartz inequality.
i forgot it already though.
if thats completely irrelevant im sorry, i really did forget a lot of multivariable calc already. |
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 Daveed United States. July 11 2008 07:36. Posts 226 | Profile Blog |
| Well, to start, where do these curves intersect? |
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| Ace United States. July 11 2008 07:38. Posts 5147 | Profile Blog |
I edited the OP Daveed - I need to find that also.
Last edit: 2008-07-11 07:38:27 |
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| Ace United States. July 11 2008 07:41. Posts 5147 | Profile Blog |
ugh nevermind. I think I've figured it out a bit. I'm so dumb:
If you break all them up into parameters you get a good lead. |
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| Ace United States. July 11 2008 07:47. Posts 5147 | Profile Blog |
x1 = -3 + t
y1 = 0 + t^2
z1 = 1 - 2t
x2 = 1 +2s
y2 = 0 + s
z2 = -4 + 3s
so C1's vector =<1,1,-2> and C2's vector = <2,1,3>.
Using Dot Product or Cross Product I can find the angle and intersection.
The #s I used are all made up so it probably wont work out neatly but I'm sure this is the right approach. Any comments? |
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 Mooga United States. July 11 2008 07:47. Posts 462 | Profile Blog |
| To find the point of intersection, equate the x y and z coordinates of C1 and C2 to each other. To find the angle of intersection, find the normal vectors of the plane and from there you can use trig to find the angle. |
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| Gene United States. July 11 2008 08:03. Posts 2845 | Profile Blog |
| yeah, intersection is were x1=x2 and y1=y2 and z1=z2, and if you know all the rest i guess you dont need much help. so find values of t and s that make that happen. |
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 clazziquai July 11 2008 08:12. Posts 6685 | Profile Blog |
no help for the mayor!
die in hell! |
| | #1 Sea.Really Fan / #1 Nesh Fan / Terran Forever~ |
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| Ace United States. July 11 2008 09:28. Posts 5147 | Profile Blog |
hah mafia scum!
Thanks guys, guess I just had a mind fart for the time being (was doing problems for ~4 hours straight). |
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 ShaLLoW[baY] Canada. July 11 2008 09:30. Posts 7844 | Profile Blog |
We elected a Mayor who can't do calculus? NO WONDER I'M FUCKING DEAD JEEZ  |
| | Look over there -> sAviOr for life~ |
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| Ace United States. July 11 2008 10:15. Posts 5147 | Profile Blog |
I can do calculus, was just confused for a sec  |
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