Question

The harmonic conjugate of (5,-2) w.r.t (8, 4) and (9, 6) is....

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Answer 1

Answer:

ANSWER

Let (4,1) divide (3,2) and (−1,6) in k:1

⇒ 4=k+1−k+3⇒4k+4=−k+3⇒5k=−1⇒k=5−1

⇒ it divide them in 1:5 externally 

its harmonic conjugate (P) would divide them in 1:5 internally

⇒Px=6−1+15=614=37,  

Py=66+10=616=38⇒(D)