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Mathematics: Post your doubts here!

With regards to AB dot unit vector of ( 2,-2,1), this uses the concept of projection vectors, and in this instance, the projection of the vector AB onto the normal of the plane. Hope this helps. Peace. Okay....i kinda get it now about the projection stuff. Thanks alot sir. If u have time...
- junyl93
- Post #5,026
- Oct 28, 2012
- Forum: A-Levels
J
Mathematics: Post your doubts here!

Excuse me sir, but for (iii), how do u know point A is (5,0,0) ?? Why AB times (unit vector 2,-2,1) ??? Why use unit vector? Please do tell me.
- junyl93
- Post #5,022
- Oct 28, 2012
- Forum: A-Levels
J
Mathematics: Post your doubts here!

Anybody here can help me with ques 10(iii) and 6(i). Help would be appreciated.Thanks
- junyl93
- Post #5,003
- Oct 28, 2012
- Forum: A-Levels
J
Mathematics: Post your doubts here!

Thanks bro! Erm....for the same paper, u have any idea on 4(ii)??
- junyl93
- Post #4,981
- Oct 28, 2012
- Forum: A-Levels
J
Mathematics: Post your doubts here!

Anybody can help me with ques 3. I don't know how to do the showing part...
- junyl93
- Post #4,960
- Oct 28, 2012
- Forum: A-Levels
J
Mathematics: Post your doubts here!

How do u question 10 (i)???
- junyl93
- Post #4,898
- Oct 27, 2012
- Forum: A-Levels

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