.Prove that the point (6, 8) lies outside the circle x2+y2 = 25. – InterviewSolution

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1.

.Prove that the point (6, 8) lies outside the circle x2+y2 = 25.

Answer»

Consider f(x,y) = x² + y² - 25

So out (6,8)f(6,8) = 6² + 8² - 25 = 36 + 64 - 25 = 75 > 0So, (6,8) is outside

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