Does anyone know why if(adsbygoogle = window.adsbygoogle || []).push({});

(i) -1 < λ/μ < 0 then P is outside AB and nearer to A;

(ii) λ/μ < -1 then P is outside AB and nearer to B?

Can anybody give me the proof? Thanks in advance!

Additional information: AP:PB = λ:μ

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# Vector - Section formula

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