需要帮助以获得β的值使用贝塞尔函数
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(u * b *(罪(t) +(β* cos (t)) / ((u *) *)) ^ 2) / (c) - c (k1 * k1 * * (cos (t)) ^ 2) / (u * b) - (w * e *(罪(t) +(β* cos (t)) / ((w * w) *)) ^ 2) / (f) + f (k2 * k2 * * (cos (t)) ^ 2) / (w * e) = 0
在哪里
= 5;
n1 = 1.5;
n2 = 1.46;
λ= 1.55;
β= ?
t = 30;%的输入(输入螺距角值的程度= ');
k1 =(2 *π* n1) /λ
k2 =(2 *π* n2) /λ
u =√k1 * k1-beta *β)
w =√β* beta-k2 * k2)
z = (u *一个)
x = (w *)
b = besselj (z)
c = diff (b)
e = besselk (x)
f = diff (e)
如何让不同的β值使用贝塞尔函数
