The position vectors of the points A, B and C are a = 3i -j-k, b= 2i + 2j + 7k and e= 5i + 2j - 3k. Find (i) the position vector of the centroid of A, B and C. (ii) the position vectors of the points P and Q which divide AB internally and externally in the ratios AP: PB =1 :2 and AQ: QB = -2:1.
The position vectors of the points A, B and C are a = 3i -j-k, b= 2i + 2j + 7k and e= 5i + 2j - 3k. Find (i) the position vector of the centroid of A, B and C. (ii) the position vectors of the points P and Q which divide AB internally and externally in the ratios AP: PB =1 :2 and AQ: QB = -2:1.
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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