Excuse me , can you help me , please ? When i make run for this programme it give me a wrong that the number of equations does not match the number of variables ,,,, I try a lot on finding the wrong but i failed , for sorry .... can you help me, please ??

 F=0.56; w0=2*3.14*4*10^9; wp=2*3.14*10*10^9; e3x=2.25; e3y=2.25; gama=0.012*wp; e3z=1-(wp^2/(w^2+I*gama*w)); m3x=1; m3y=1; m3z=1-((F*w^2)/(w^2-w0^2+I*gama*w)); w=2*3.14*4.5*10^9; c=3*10^8;  ns=1; nf=2; 
    Bvalue=Table[FindRoot[((BesselJ[1+s,k0*hi*Sqrt[nf^2-ns^2]]-BesselJ[s-1,k0*hi*Sqrt[nf^2-ns^2]])/(BesselJ[s,k0*hi*Sqrt[nf^2-ns^2]]))-(2*k3/(k0*Sqrt[nf^2-ns^2]))+m Pi,{B,1.2}],{hi,0.033,0.045,0.01}]
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    $\begingroup$ Please fix the code you posted. There are several parts which are syntactically broken. $\endgroup$ – Natas Oct 3 '20 at 15:22
  • $\begingroup$ @Natas so sorry but i can not fully understand you ,,, which is syntactically broken ?? $\endgroup$ – Aya Oct 3 '20 at 15:58
  • $\begingroup$ Your open and closed parentheses do not match. Copy your code above into a notebook and you will see the problem. Also trying to use N which is a built-in function as a variable. There are other issues but until you fix the parentheses the definitions are broken. $\endgroup$ – Bob Hanlon Oct 3 '20 at 16:12
  • $\begingroup$ @BobHanlon is it Ok now ??? for N i delete it and want to solve the equation without finding N ,,,, What is the other issues , please ?? $\endgroup$ – Aya Oct 3 '20 at 16:43
  • $\begingroup$ hi is a vector so the argument to FindRoot has multiple equations; but you are only solving for a single variable B. Also in the FindRoot, k3 is undefined. The next two lines make no sense. The last line has Frame misspelled. $\endgroup$ – Bob Hanlon Oct 3 '20 at 17:04

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