Bessel Functions - 10.25 Definitions

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DLMF Formula Constraints Maple Mathematica Symbolic
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10.25.E1 z 2 d 2 w d z 2 + z d w d z - ( z 2 + ν 2 ) w = 0 superscript 𝑧 2 derivative 𝑤 𝑧 2 𝑧 derivative 𝑤 𝑧 superscript 𝑧 2 superscript 𝜈 2 𝑤 0 {\displaystyle{\displaystyle z^{2}\frac{{\mathrm{d}}^{2}w}{{\mathrm{d}z}^{2}}+% z\frac{\mathrm{d}w}{\mathrm{d}z}-(z^{2}+\nu^{2})w=0}}
z^{2}\deriv[2]{w}{z}+z\deriv{w}{z}-(z^{2}+\nu^{2})w = 0

(z)^(2)* diff(w, [z$(2)])+ z*diff(w, z)-((z)^(2)+ (nu)^(2))*w = 0
(z)^(2)* D[w, {z, 2}]+ z*D[w, z]-((z)^(2)+ \[Nu]^(2))*w == 0
Failure Failure
Failed [220 / 300]
Result: -.6467477718e-9-2.000000002*I
Test Values: {nu = 1/2*3^(1/2)+1/2*I, w = 1/2*3^(1/2)+1/2*I, z = 1/2*3^(1/2)+1/2*I}

Result: -.8660254040e-9-2.000000001*I
Test Values: {nu = 1/2*3^(1/2)+1/2*I, w = 1/2*3^(1/2)+1/2*I, z = -1/2*3^(1/2)-1/2*I}

... skip entries to safe data
Failed [264 / 300]
Result: Complex[0.0, -2.0]
Test Values: {Rule[w, Power[E, Times[Complex[0, Rational[1, 6]], Pi]]], Rule[z, Power[E, Times[Complex[0, Rational[1, 6]], Pi]]], Rule[ν, Power[E, Times[Complex[0, Rational[1, 6]], Pi]]]}

Result: Complex[0.0, -2.0]
Test Values: {Rule[w, Power[E, Times[Complex[0, Rational[1, 6]], Pi]]], Rule[z, Power[E, Times[Complex[0, Rational[1, 6]], Pi]]], Rule[ν, Power[E, Times[Complex[0, Rational[-5, 6]], Pi]]]}

... skip entries to safe data
10.25.E2 I ν ( z ) = ( 1 2 z ) ν k = 0 ( 1 4 z 2 ) k k ! Γ ( ν + k + 1 ) modified-Bessel-first-kind 𝜈 𝑧 superscript 1 2 𝑧 𝜈 superscript subscript 𝑘 0 superscript 1 4 superscript 𝑧 2 𝑘 𝑘 Euler-Gamma 𝜈 𝑘 1 {\displaystyle{\displaystyle I_{\nu}\left(z\right)=(\tfrac{1}{2}z)^{\nu}\sum_{% k=0}^{\infty}\frac{(\tfrac{1}{4}z^{2})^{k}}{k!\Gamma\left(\nu+k+1\right)}}}
\modBesselI{\nu}@{z} = (\tfrac{1}{2}z)^{\nu}\sum_{k=0}^{\infty}\frac{(\tfrac{1}{4}z^{2})^{k}}{k!\EulerGamma@{\nu+k+1}}
( ν + k + 1 ) > 0 𝜈 𝑘 1 0 {\displaystyle{\displaystyle\Re(\nu+k+1)>0}}
BesselI(nu, z) = ((1)/(2)*z)^(nu)* sum((((1)/(4)*(z)^(2))^(k))/(factorial(k)*GAMMA(nu + k + 1)), k = 0..infinity)
BesselI[\[Nu], z] == (Divide[1,2]*z)^\[Nu]* Sum[Divide[(Divide[1,4]*(z)^(2))^(k),(k)!*Gamma[\[Nu]+ k + 1]], {k, 0, Infinity}, GenerateConditions->None]
Successful Successful - Successful [Tested: 70]