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I0
Modified Bessel function of the first kind, order zero.
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Loading LOADSUB ALL FROM "BESMC.HTS"
or LOADSUB FROM "MATHLIB.HTS"
Usage REAL X,Y
Y=FNI0(X)
Description
FNI0 returns the value of the modified cylindrical Bessel function of the first kind and order zero of x, I0(x). I0(x) is defined for all values of x, but large absolute values of x may cause the result to be larger than MAXREAL, the largest value representable.
Errors
FNI0 causes an HTBasic error if its argument is not of type REAL or if the result would be larger than MAXREAL.
See Also
I1, In, K0
I0(x)
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