Recent content by Scandal

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    Find AB X AC: Prove Triangle Area is 3/2

    There it is! Thank you. I see now how cube was a wrong choice of words. What I meant to say was a square (3D vs. 2D), but as you say the correct would be a parallelogram. I think just the feeling of knowing somewhat what the normal vector is provides a lot when it comes to the presentation. I...
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    Find AB X AC: Prove Triangle Area is 3/2

    Might be I was unclear (perhaps of my poor English), but I found the answer, so this might not qualify for the homework help part of the forum, I don't know. The question is mostly why do the normal vector (cross product as many like to refer to it) have the properties of the area of a cube...
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    Find AB X AC: Prove Triangle Area is 3/2

    Find: AB X AC (vectors). Prove that the area of the triangle is \frac{3}{2} Further information We're given the points A(1,0,0) , B(0,2,2), C(1,1,2) So considering how this is the same question there is no doubt that we have to use the normal vector to find the answer. The attempt at a...
  4. S

    Confirming the Euler's Formula: e^{i(a+bx)}=

    I know Daves question is answered, but instead of making a new thread I just ask another one here as it is somewhat related. Unfortunately I don't have a mathtype program so you'll have to imagine. So if you have the e^xi expression and set x = pi, this will equal -1. Adding 2Pi equals 1. So far...
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