sinint (Symbolic Math Toolbox)

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Sine integral function.

Syntax

Y = sinint(X)

Description

sinint(X) evaluates the sine integral function at the elements of X, a numeric matrix, or a symbolic matrix. The result is a numeric matrix. The sine integral function is defined by

Examples

sinint([pi 0;-2.2 exp(3)]) returns

    1.8519         0
   -1.6876    1.5522

sinint(1.2) returns 1.1080.

diff(sinint(x)) returns sin(x)/x.