Recent content by canadian_beef

  1. C

    What Is the Necessary Condition for Three Planes to Intersect Along a Line?

    ok thanks what would be an example as a necessary conditon and how would i go about finding it
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    Find Ratio of Segments in Triangle XYZ

    are there any ideas? Is there something else I can tell you about this problem.
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    What Is the Necessary Condition for Three Planes to Intersect Along a Line?

    Im not sure how to do it the dertiminant way. I do not think my math is wrong so far. Help
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    What Is the Necessary Condition for Three Planes to Intersect Along a Line?

    another typo on my part i have that c there
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    What Is the Necessary Condition for Three Planes to Intersect Along a Line?

    my bad..edited...i mistyped the question but still need help
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    What Is the Necessary Condition for Three Planes to Intersect Along a Line?

    Homework Statement Find a necessary condition for the three planes given below to have a line of intersection. -x +ay+bz=0 ax-y+cz=0 bx+cy-z=0 Homework Equations in order to get a line of intersection between the planes..i know i need one line of the matrix to be [0 0 0|0]...
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    Equation of 3d vector question

    cant I just make up any A and B values and it will work?
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    Understanding Reflection in 3D Space: Finding Point Q | Homework Equations

    Thanks for the help so far This is what I have done so far I know that the plane is 2x-y+z=11 Therefore all line perpindicular to that plane have a direction of (2,-1,1) The parametric equation of the line which passes through point P and hits the plane are x=-1+2t y=3-t z=4+t I...
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    Understanding Reflection in 3D Space: Finding Point Q | Homework Equations

    Homework Statement The point Q is the reflection of P(-1,3,4), in the plane with equation 2x-y+z=1. Determine the coordinates of Q Homework Equations The Attempt at a Solution Well I am not really looking for a solution. I just want to know what I am trying to find. What is a reflection in...
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    Equation of 3d vector question

    couple questions Any vector, <a,b,c>, perpendicular to <3, -1, 1> must satisfy 3a-b+ c= 0 shouldnt there be a D value such that 3a-b+c+d=0 and how do i make sure they intersect
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    Find Ratio of Segments in Triangle XYZ

    Homework Statement For triangle XYZ, point P divides XZ in the ratio 3:1 and Q is the midpoint of XY. If R is the point of intersection of PY and QZ, find the ratio into which R divides PY. Homework Equations This is the only equation that may pertain to this that I can think of...
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    Equation of 3d vector question

    Homework Statement Find an equation of the line through the point A (4,5,5) which meets the line (x-11)/3 = (y+8)/-1 = z-4 at right angles. Homework Equations The Attempt at a Solution well i know that the direction of the given line is d(3,-1,1) and the original line crosses...
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