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If `alpha, beta gamma` are the real roots of the equation `x^(3)-3px^(2)+3qx-1=0`, then find the centroid of the triangle whose vertices are `(alpha, (1)/(alpha)), (beta, (1)/(beta))` and `(gamma, (1)/(gamma))`.

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To find the centroid of the triangle whose vertices are \((\alpha, \frac{1}{\alpha})\), \((\beta, \frac{1}{\beta})\), and \((\gamma, \frac{1}{\gamma})\), where \(\alpha\), \(\beta\), and \(\gamma\) are the real roots of the equation \(x^3 - 3px^2 + 3qx - 1 = 0\), we can follow these steps: ### Step 1: Identify the formula for the centroid The centroid \(G\) of a triangle with vertices \((x_1, y_1)\), \((x_2, y_2)\), and \((x_3, y_3)\) is given by: \[ G = \left(\frac{x_1 + x_2 + x_3}{3}, \frac{y_1 + y_2 + y_3}{3}\right) \] ### Step 2: Substitute the vertices into the centroid formula In our case, the vertices are: - \((\alpha, \frac{1}{\alpha})\) - \((\beta, \frac{1}{\beta})\) - \((\gamma, \frac{1}{\gamma})\) Thus, the coordinates of the centroid become: \[ G = \left(\frac{\alpha + \beta + \gamma}{3}, \frac{\frac{1}{\alpha} + \frac{1}{\beta} + \frac{1}{\gamma}}{3}\right) \] ### Step 3: Calculate \(\alpha + \beta + \gamma\) Using Vieta's formulas for the polynomial \(x^3 - 3px^2 + 3qx - 1 = 0\): - The sum of the roots \(\alpha + \beta + \gamma = 3p\). ### Step 4: Calculate \(\frac{1}{\alpha} + \frac{1}{\beta} + \frac{1}{\gamma}\) Using the identity: \[ \frac{1}{\alpha} + \frac{1}{\beta} + \frac{1}{\gamma} = \frac{\beta\gamma + \gamma\alpha + \alpha\beta}{\alpha\beta\gamma} \] From Vieta's formulas: - \(\beta\gamma + \gamma\alpha + \alpha\beta = 3q\) - \(\alpha\beta\gamma = 1\) Thus, we have: \[ \frac{1}{\alpha} + \frac{1}{\beta} + \frac{1}{\gamma} = \frac{3q}{1} = 3q \] ### Step 5: Substitute back into the centroid formula Now substituting back into the formula for the centroid: \[ G = \left(\frac{3p}{3}, \frac{3q}{3}\right) = (p, q) \] ### Final Result The centroid of the triangle is: \[ \boxed{(p, q)} \]
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