यदि \(p=\frac{a^2}{(b-a)(c-a)}\), \(q=\frac{b^2}{(c-b)(a-b)}\), \(r=\frac{c^2}{(a-c)(b-c)}\), है, तो (p + q + r)2 किसके बराबर है?

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Option 3 : 1
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दिया गया है:

p = \(\frac{a^2}{(b-a)(c-a)}\), q = \(\frac{b^2}{(c-b)(a-b)}\), r = \(\frac{c^2}{(a-c)(b-c)}\)

गणना:

माना, a = 1, b = 2, c = 3

प्रश्न के अनुसार,

⇒ p = \(\frac{1^2}{(2-1)(3-1)}\) = \(\frac{1}{2}\)

⇒ q = \(\frac{2^2}{(3-2)(1-2)}\) = -4

⇒ r = \(\frac{3^2}{(1-3)(2-3)}\) = \(\frac{9}{2}\)

अब, (p + q + r)2 = (\(\frac{1}{2}\) - 4 + \(\frac{9}{2}\))2 = (1)2 = 1

∴ (p + q + r)2 का मान 1 है। 

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