Prove that the points (a,0), (b,0) and (1,1) are collinear if 1/a+1/b=1.

Asked by  | 27th Feb, 2013, 03:15: PM

Expert Answer:

Sometimes there can be printing mistakes in the book of sample papers also. If you will try to solve it using the section method and try to find the ratio, you will find that the ratio would come out to be 0 if you consider the points that you provided, which is not possible for collinear points. So, yeah, there can be mistakes everywhere. Sometimes NCERT books (even Board exam papers) also have mistakes, so, its alright. 
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Answered by  | 8th Dec, 2017, 05:00: PM

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