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The Web site integrals.wolfram.com gives the following:

integral of sin2x/x = (1/2) (log x - Ci(2 x))

Ci is the cosine integral, a special function. Look at the site for a more detailed description.

What this really means is that this integral can NOT be solved with the so-called elementary functions, i.e., using only polynomials, roots, trigonometric functions, natural logarithms, and the inverses of some of these.

The Web site integrals.wolfram.com gives the following:

integral of sin2x/x = (1/2) (log x - Ci(2 x))

Ci is the cosine integral, a special function. Look at the site for a more detailed description.

What this really means is that this integral can NOT be solved with the so-called elementary functions, i.e., using only polynomials, roots, trigonometric functions, natural logarithms, and the inverses of some of these.

The Web site integrals.wolfram.com gives the following:

integral of sin2x/x = (1/2) (log x - Ci(2 x))

Ci is the cosine integral, a special function. Look at the site for a more detailed description.

What this really means is that this integral can NOT be solved with the so-called elementary functions, i.e., using only polynomials, roots, trigonometric functions, natural logarithms, and the inverses of some of these.

The Web site integrals.wolfram.com gives the following:

integral of sin2x/x = (1/2) (log x - Ci(2 x))

Ci is the cosine integral, a special function. Look at the site for a more detailed description.

What this really means is that this integral can NOT be solved with the so-called elementary functions, i.e., using only polynomials, roots, trigonometric functions, natural logarithms, and the inverses of some of these.

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