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# Triangle distance

Let PQR be a triangle.Take a point on or inside the triangle.Let $$f(x,y) = ax+by+c$$.Show that $$f(A) \le max(f(P),f(Q),f(R))$$.

2 years, 9 months ago

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This problem was posed in ISI Entrance this year. · 2 years, 9 months ago

Yeah...right....Did u give this year?? · 2 years, 9 months ago

Yes, I did this one too. :) · 2 years, 9 months ago