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scipy tutorial - Baustatik-Info-Server

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Kelvin Functions<br />

SciPy Reference Guide, Release 0.8.dev<br />

kelvin(out1, out2,<br />

out3)<br />

(Be, Ke, Bep, Kep)=kelvin(x) returns the tuple (Be, Ke, Bep, Kep) which containes<br />

kelvin_zeros(nt) Compute nt zeros of all the kelvin functions returned in a length 8 tuple of arrays of<br />

length nt.<br />

ber() y=ber(x) returns the Kelvin function ber x<br />

bei() y=bei(x) returns the Kelvin function bei x<br />

berp() y=berp(x) returns the derivative of the Kelvin function ber x<br />

beip() y=beip(x) returns the derivative of the Kelvin function bei x<br />

ker() y=ker(x) returns the Kelvin function ker x<br />

kei() y=kei(x) returns the Kelvin function ker x<br />

kerp() y=kerp(x) returns the derivative of the Kelvin function ker x<br />

keip() y=keip(x) returns the derivative of the Kelvin function kei x<br />

kelvin<br />

(Be, Ke, Bep, Kep)=kelvin(x) returns the tuple (Be, Ke, Bep, Kep) which containes complex numbers representing<br />

the real and imaginary Kelvin functions and their derivatives evaluated at x. For example, kelvin(x)[0].real<br />

= ber x and kelvin(x)[0].imag = bei x with similar relationships for ker and kei.<br />

kelvin_zeros(nt)<br />

Compute nt zeros of all the kelvin functions returned in a length 8 tuple of arrays of length nt. The tuple<br />

containse the arrays of zeros of (ber, bei, ker, kei, ber’, bei’, ker’, kei’)<br />

ber<br />

bei<br />

y=ber(x) returns the Kelvin function ber x<br />

y=bei(x) returns the Kelvin function bei x<br />

berp<br />

y=berp(x) returns the derivative of the Kelvin function ber x<br />

beip<br />

y=beip(x) returns the derivative of the Kelvin function bei x<br />

ker<br />

kei<br />

y=ker(x) returns the Kelvin function ker x<br />

y=kei(x) returns the Kelvin function ker x<br />

kerp<br />

y=kerp(x) returns the derivative of the Kelvin function ker x<br />

keip<br />

y=keip(x) returns the derivative of the Kelvin function kei x<br />

These are not universal functions:<br />

ber_zeros(nt) Compute nt zeros of the kelvin function ber x<br />

bei_zeros(nt) Compute nt zeros of the kelvin function bei x<br />

berp_zeros(nt) Compute nt zeros of the kelvin function ber’ x<br />

beip_zeros(nt) Compute nt zeros of the kelvin function bei’ x<br />

ker_zeros(nt) Compute nt zeros of the kelvin function ker x<br />

kei_zeros(nt) Compute nt zeros of the kelvin function kei x<br />

kerp_zeros(nt) Compute nt zeros of the kelvin function ker’ x<br />

keip_zeros(nt) Compute nt zeros of the kelvin function kei’ x<br />

3.17. Special functions (<strong>scipy</strong>.special) 443

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