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Vector calc is kicking my ASS =[ |
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JoeDeertay United States. Sep 11 2007 19:24. Posts 1730 | | |
I'm trying to get this homework done for class tomorrow and I've already been working on it for about 45 minutes, but I've only managed to complete 5 of 19 problems and I still have to study for tomorrow's quiz. I hear this class only gets harder to the point of impossible by semester's end too, so it looks like I'll be hitting the books more often and playing less. It took me about 3 hours to do my physics homework online earlier today too. Ugh college is such a bad beat.
I guess it's a good thing I've been able to log about 5700 hands of my weekly 10k goal so far already this week after Sunday's marathon, so I can spend some time to get ahead in some classes over the next few days. Maybe I'll see some TAs for help or something with this shit after I bomb the quiz 
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| Variance has a big brother named doomswitch. - edzwoo | |
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Jubert69 United States. Sep 11 2007 19:26. Posts 3191 | | |
Good, at least some people are putting school in front of poker |
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probe United States. Sep 11 2007 19:40. Posts 518 | | |
post some questions if you need help |
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JoeDeertay United States. Sep 11 2007 19:47. Posts 1730 | | |
Yeah if I get absolutely stuck on a problem I'll post it instead of racking my brain for hours before coming up with an answer. Thanks in advance for the help, it'll be greatly appreciated. |
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| Variance has a big brother named doomswitch. - edzwoo | |
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JoeDeertay United States. Sep 11 2007 19:58. Posts 1730 | | |
Ok here is the first question. I think I might know how to do it but I'm not sure if I'm right:
Find the equation of the plane passng through the origin (0,0,0) and parallel to the plane x+y+z+2=0.
To get this answer would I just find 2 points on the plane and the vector between them, thenfind the line passing through (0,0,0) that is parallel to that vector? I don't see any examples of a question like this on my notes so I don't know if I'm right. |
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| Variance has a big brother named doomswitch. - edzwoo | |
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JoeDeertay United States. Sep 11 2007 20:36. Posts 1730 | | |
Question 2. I got an answer but I'm not sure if I did it right again.
"Find the direction numbers for the line of intersectino between planes x+y+z=1 and x+z=0."
I first just found the normal vectors for both planes by taking the coefficients of the variables in their equations (I'm thinking if I messed up it was here) and got n1=<1,1,1> and n2<1,0,1>. The line of intersection between the planes would be parallel to the cross product of the two normal vectors, which comes out to be n1 X n2 = <1,0,-1>. I just took these values to be the direction numbers of the vector <a,b,c> parallel to the intersection line. Did I do it right or miss something? |
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| Variance has a big brother named doomswitch. - edzwoo | |
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