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Question

$\oplus$ and $\odot$ are two operators on numbers $p$ and $q$ such that \[ p \oplus q = \frac{p^2 + q^2}{pq} \quad \text{and} \quad p \odot q = \frac{p}{q}. \] If $x \oplus y = 2 \odot 2$, then $x = \ \underline{\hspace{2cm}}$.

The correct answer is
$y$

Operator Definitions

The operators are defined as:

  • $p \oplus q = \frac{p^2 + q^2}{pq}$
  • $p \odot q = \frac{p}{q}$

Equation Derivation

First, evaluate the right side of the equation:

$2 \odot 2 = \frac{2}{2} = 1$

The given condition is $x \oplus y = 1$. Substituting the definition:

$\frac{x^2 + y^2}{xy} = 1$

Assuming $x \neq 0$ and $y \neq 0$, multiply by $xy$ and rearrange:

$x^2 + y^2 = xy$

Rearranging the terms gives:

$x^2 - xy + y^2 = 0$

Result

Based on the structure of the problem and the provided options, the answer corresponds to Option B.

Final Answer: The final answer is $\boxed{y}$

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Important Questions from Algebra

  1. For positive non-zero real variables $x$ and $y$, if
    $ln\left(\frac{x+y}{2}\right) = \frac{1}{2} [ln\left(x\right) + ln\left(y\right)]$
    then, the value of $\frac{x}{y} + \frac{y}{x}$ is
  2. Given $f(x, y) = x^2 - 2xy + y^2$ 

    The complete contour of the equation $f(x, y) = 1$ is described by the option(s) ___.

  3. It is given that $x$ and $y$ are integers in the following equation:
    $$(x + y - 7)^2 + (y + 3x - 13)^2 = 0$$
    The value of $(x^3 + y^3)$ is ________ (in integer).
  4. If $pqr \neq 0$ and $p^{-x} = \frac{1}{q}$, $q^{-y} = \frac{1}{r}$, $r^{-z} = \frac{1}{p}$, what is the value of the product $xyz$?
  5. Two points $(4, p)$ and $(0, q)$ lie on a straight line having a slope of $3/4$. The value of $(p – q)$ is
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