Integration of \(\frac{\sin^2(x)}{x^2}\) Explained

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Question:

Integrate (sin(x))^2/x^2 using special functions if necessary

Answer:

To integrate the function (\frac{\sin^2(x)}{x^2}), we can use a known result involving the sinc function. The integral can be expressed in terms of the sinc function, which is defined as:

[ \text{sinc}(x) = \frac{\sin(x)}{x} ]

Thus, we can rewrite the integral as:

[ \int \frac{\sin^2(x)}{x^2} , dx = \int \text{sinc}^2(x) , dx ]

The integral of (\text{sinc}^2(x)) can be evaluated using the following result:

[ \int \text{sinc}^2(x) , dx = \frac{x}{2} + \frac{1}{4} \sin(2x) + C ]

where (C) is the constant of integration.

Therefore, the integral of (\frac{\sin^2(x)}{x^2}) is:

[ \int \frac{\sin^2(x)}{x^2} , dx = \frac{x}{2} + \frac{1}{4} \sin(2x) + C ]

This result can be used for definite integrals or further analysis as needed.