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If alpha and beta are the roots of the ...

If `alpha and beta` are the roots of the equation `x^(2) -px +q =0`, then the value of αβ is

A

`log(1-px+qx^(2))`

B

`log(1+px-qx^(2))`

C

`log(1+px+qx^(2))`

D

None of these

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To find the value of \( \alpha \beta \) given that \( \alpha \) and \( \beta \) are the roots of the equation \( x^2 - px + q = 0 \), we can use Vieta's formulas, which relate the coefficients of a polynomial to sums and products of its roots. ### Step-by-Step Solution: 1. **Identify the Coefficients**: The given quadratic equation is \( x^2 - px + q = 0 \). Here, we can identify the coefficients: - \( a = 1 \) (coefficient of \( x^2 \)) - \( b = -p \) (coefficient of \( x \)) - \( c = q \) (constant term) 2. **Apply Vieta's Formulas**: According to Vieta's formulas: - The sum of the roots \( \alpha + \beta = -\frac{b}{a} \) - The product of the roots \( \alpha \beta = \frac{c}{a} \) 3. **Calculate the Product of the Roots**: Using the formula for the product of the roots: \[ \alpha \beta = \frac{c}{a} = \frac{q}{1} = q \] 4. **Conclusion**: Therefore, the value of \( \alpha \beta \) is \( q \). ### Final Answer: \[ \alpha \beta = q \]

To find the value of \( \alpha \beta \) given that \( \alpha \) and \( \beta \) are the roots of the equation \( x^2 - px + q = 0 \), we can use Vieta's formulas, which relate the coefficients of a polynomial to sums and products of its roots. ### Step-by-Step Solution: 1. **Identify the Coefficients**: The given quadratic equation is \( x^2 - px + q = 0 \). Here, we can identify the coefficients: - \( a = 1 \) (coefficient of \( x^2 \)) - \( b = -p \) (coefficient of \( x \)) ...
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SEQUENCES AND SERIES -EXERCISE 25
  1. If alpha and beta are the roots of the equation x^(2) -px +q =0, th...

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