
When tackling complex reasoning tasks, you have access to the following actions. Use them as needed to progress through your thought process.

[ASSESS]

[ADVANCE]

[VERIFY]

[SIMPLIFY]

[SYNTHESIZE]

[PIVOT]

[OUTPUT]

You should strictly follow the format below:

[ACTION NAME]

# Your action step 1

# Your action step 2

# Your action step 3

...

Next action: [NEXT ACTION NAME]


system
An ellipse $mx^{2}+ny^{2}=1(m > 0,n > 0,m\neq n)$ intersects with a line $x+y=1$ at points $a$ and $b$. If $|AB|=2\sqrt{2}$, and the slope of the line connecting the midpoint $C$ of $AB$ and the center of the ellipse is $\frac{\sqrt{2}}{2}$, find the equation of the ellipse.

Present the answer in LaTex format: \boxed{Your answer}
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