Solve with any differentiation rule from 1 to 4 y= x2.1

1. Identify the function to differentiate: y = x^{2.1}.

2. Apply the power rule, which states that \frac{d}{dx}x^n = nx^{n-1}.

3. For y = x^{2.1}, n = 2.1.

4. According to the power rule, the derivative is:
\frac{dy}{dx} = 2.1 \cdot x^{2.1 - 1}

5. Simplify the expression:
\frac{dy}{dx} = 2.1x^{1.1}

Final answer: \frac{dy}{dx} = 2.1x^{1.1}