જો ત્રિકોણનું પરિકેન્દ્ર ઉંગમબિંદુ પર આવેલ હોય અને તેનું મધ્યકેન્દ્ર બિંદુ \((a^2 + 1 , a^2 + 1 )\) અને \((2a, - 2a)\) જોડતા રેખાખંડના મધ્યબિંદુ પર આવેલ હોય જ્યાં \(a \ne 0\), તો કોઈ પણ \(a\) ની કિમત માટે ત્રિકોણનું મધ્યકેન્દ્ર ક્યાં આવેલ હોય?

A \(y- 2ax\, = 0\)
B \(y- (a^2 + 1)x\, = 0\)
C \(y+ x\, = 0\)
D \((a - 1)^2x - (a + 1)^2y\, = 0\)

Verified Solution

Answer & Solution

Correct Answer

(D) \((a - 1)^2x - (a + 1)^2y\, = 0\)

Step-by-step Solution

Detailed explanation

Circumcentre \(=(0,0)\) Centroid \( = \left( {\frac{{{{\left( {a + 1} \right)}^2}}}{2},\frac{{{{\left( {a - 1} \right)}^2}}}{2}} \right)\) We know the circumcenter \((O)\), Centroid \((G)\) and orthocentre \((H)\) of a triangle lie on the line joining the \(O\) and \(G\) Also,…

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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