Analyzing the Quadratic Equation Coefficients
The given quadratic equation is $(n^2-2n+2)x^2-3x+(n^2-2n+2)^2=0$. Let $k = n^2-2n+2$. We can rewrite this by completing the square:
$k = (n^2-2n+1) + 1 = (n-1)^2 + 1$.
Since $(n-1)^2 \ge 0$ for any real $n$, the minimum value of $k$ is $1$ (when $n=1$). Therefore, $k \ge 1$.
The equation becomes $kx^2 - 3x + k^2 = 0$. For a quadratic equation $Ax^2+Bx+C=0$, the coefficient $A$ must be non-zero. Since $k \ge 1$, $k \neq 0$, and the equation is always quadratic.
Finding the Minimum Product of Roots ($\alpha$)
For the quadratic equation $kx^2 - 3x + k^2 = 0$, the product of the roots is given by $P = \frac{C}{A} = \frac{k^2}{k}$.
Simplifying, we get $P = k$.
We established that $k \ge 1$. The minimum value of $P$ occurs when $k$ is at its minimum.
Therefore, the minimum value of the product of roots is $\alpha = \min(k) = 1$.
Finding the Maximum Sum of Roots ($\beta$)
The sum of the roots for the quadratic equation $kx^2 - 3x + k^2 = 0$ is given by $S = -\frac{B}{A} = -\frac{-3}{k}$.
Simplifying, we get $S = \frac{3}{k}$.
We know that $k \ge 1$. This implies $0 < \frac{1}{k} \le 1$.
Therefore, $0 < \frac{3}{k} \le 3$. The maximum value of $S$ occurs when $\frac{1}{k}$ is maximum, which happens when $k$ is minimum ($k=1$).
Thus, the maximum value of the sum of roots is $\beta = \max(\frac{3}{k}) = 3$.
Calculating the Geometric Progression (G.P.) Sum
We need to find the sum of the first six terms of a G.P.
- First term, $a = \alpha = 1$.
- Common ratio, $r = \frac{\alpha}{\beta} = \frac{1}{3}$.
- Number of terms, $n = 6$.
The formula for the sum of the first $n$ terms of a G.P. is $S_n = a \frac{1 - r^n}{1 - r}$.
Substituting the values:
$S_6 = 1 \cdot \frac{1 - (\frac{1}{3})^6}{1 - \frac{1}{3}}$
$S_6 = \frac{1 - \frac{1}{729}}{\frac{2}{3}}$
$S_6 = \frac{\frac{729 - 1}{729}}{\frac{2}{3}}$
$S_6 = \frac{\frac{728}{729}}{\frac{2}{3}}$
$S_6 = \frac{728}{729} \times \frac{3}{2}$
$S_6 = \frac{364}{729} \times 3$
$S_6 = \frac{364}{243}$
Similar Questions
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Important Questions from Algebra
Let A = {-3, -2, -1, 0, 1, 2, 3}. Let R be a relation on A defined by xRy if and only if $0\le x^2+2y\le 4$. Let $l$ be the number of elements in R and $m$ be the minimum number of elements required to be added in R to make it a reflexive relation. Then $l + m$ is equal to
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Let the domain of the function $f (x) = \log_2 \log_4 \log_6(3 + 4x -x^2)$ be $(a, b)$.
If $\int_{b-a}^{b+a}[x^2] dx=p-\sqrt{q}-\sqrt{r}$, $p,q,r\in N$, $gcd(p,q,r) = 1$, where $[.]$ is the greatest integer function, then $p + q + r$ is equal to
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