Let $x$ and $y$ be positive real numbers.  Find the maximum value of
\[\frac{(x + y)^2}{x^2 + y^2}.\]
Question:
Let $x$ and $y$ be positive real numbers.  Find the maximum value of
\[\frac{(x + y)^2}{x^2 + y^2}.\]
Answer:
Let's think step by step.

user
2
Let $x$ and $y$ be positive real numbers.  Find the maximum value of
\[\frac{(x + y)^2}{x^2 + y^2}.\]
train