The order of the differential equation satisfying `sqrt(1-x^4)+sqrt(1-y^4)=a(x^2-y^2)` is `1` b. `2` c. `3` d. `4`

Explanation

To determine the order of the differential equation satisfying the given equation \( \sqrt{1 - x^4} + \sqrt{1 - y^4} = a(x^2 - y^2) \), we can follow these steps:

### Step 1: Identify the equation
The given equation is:
\[ \sqrt{1 - x^4} + \sqrt{1 - y^4} = a(x^2 - y^2) \]

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