Cosine integral function.
Syntax
Y = cosint(X)
Description
cosint(X) evaluates the cosine integral function at the elements of X, a numeric matrix, or a symbolic matrix. The cosine integral function is defined by:
where 
is Euler's constant 0.577215664...
Examples
cosint(7.2) returns 0.0960.
cosint([0:0.1:1]) returns
Columns 1 through 7
Inf -1.7279 -1.0422 -0.6492 -0.3788 -0.1778 -0.0223
Columns 8 through 11
0.1005 0.1983 0.2761 0.3374
The statements
syms x;
f = cosint(x);
diff(x)
return
cos(x)/x
See Also
sinint
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