Differentiate w.r.t to 'x',`(sinx+cosx)^(2)`

Explanation

To differentiate the function \( ( \sin x + \cos x )^2 \) with respect to \( x \), we can follow these steps:

### Step 1: Define the function
Let \( y = (\sin x + \cos x)^2 \).

### Step 2: Apply the chain rule
To differentiate \( y \) with respect to \( x \), we will use the chain rule. The chain rule states that if you have a composite function \( f(g(x)) \), then the derivative is given by \( f'(g(x)) \cdot g'(x) \).

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