hi everyone(adsbygoogle = window.adsbygoogle || []).push({});

I have a matlab question.

I want find all of zeros below equation:

εr*t0*besseli(1,tp*a)*besselk(0,t0*a)+tp*besselk(1,t0*a)*besseli(0,tp*a)=0

where:

tp=√(k^2-εr*k0^2)

t0=√(k^2-k0^2)

k0=ω/c.

c is light velocity,a,ω,εr,k0 are constant and known.

t0 and tp are in terms of k.

besseli and besselk are modified bessel functions of first and second type.

in above equation all of quantities are known except k that k is zero of equation.

i want to find zeros of "er*t0*besseli(1,tp*a)*besselk(0,t0*a)+tp*besselk(1,t0*a)*besseli(0,tp*a)=0",i.e i want find values of k.

by using of solve command only one of the zeros are found.

i can not use from fzero command,because there isn't guess point that is imaginary(k)=0.

i don't now how find all of zeros in equation.

this equation is dispersion relation of plasma.

does anyone an idea for find zeros this equation?

please help me!

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Matlab question.please help me

Can you offer guidance or do you also need help?

Draft saved
Draft deleted

Loading...

Similar Threads for Matlab question please |
---|

MATLAB MATLAB: forces acting on an object |

MATLAB Matlab histogram |

MATLAB Sovling Bernoulli's differential equation in matlab? |

MATLAB Matlab-like software |

MATLAB Matlab data into bins |

**Physics Forums | Science Articles, Homework Help, Discussion**