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If A≠B≠0, Prove that the Points (A, A2), (B, B2) (0, 0) Will Not Be Collinear - Mathematics

Answer in Brief

If a≠b≠0, prove that the points (a, a2), (b, b2) (0, 0) will not be collinear.

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Solution

Let A(a, a2), B(b, b2) and C(0, 0) be the coordinates of the given points.

We know that the area of triangle having vertices (x1, y1), (x2, y2) and (x3, y3) is ∣∣`1/2`[x1(y2−y3)+x2(y3−y1)+x3(y1−y2)]∣∣ square units.

So,

Area of ∆ABC

`= |1/2|a(b^2 - 0) + b(0 - a^2) + 0(a^2 -  b^2)||`

`=|1/2(ab^2 - a^2b)|`

`= 1/2|ab(b -a)|`

`!= 0     (∵ a!= b != 0)`

Since the area of the triangle formed by the points (a, a2), (b, b2) and (0, 0) is not zero, so the given points are not collinear.

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APPEARS IN

RD Sharma Class 10 Maths
Chapter 6 Co-Ordinate Geometry
Exercise 6.5 | Q 21 | Page 54
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