R=input('Please input R='); j[dZ*Jr_
p=0.1; juF=ZW%i
n=chaxun(R); \ Xh
C
L=15;
hO.b?>3NL
c=3*10^8; \rUKP""m
h=6.626196*10^(-34); 965 x_
%
k=1.3806505*10^(-23); q\i&ERr
B=198.95; 7"aN7Q+EbI
r=0.509*10^(-60); *`w>\},su
d=532*10^(-9); B%Qo6*b
for s=0:20 :^{KY(3
for T=0.1:50:300.1 0H4|}+e
if mod(s,2)==0 #V/{DPz
f=p*n*L*6*((2*h*c)/(9*k*T))*((3/2)*(s+1)*(s+2)/(2*s+3))*(64*(pi^2)/15)*((c/d-(4*s+6)*B)^4)*r*exp(-(h*c*B/(k*T))*s(s+1)); viYrPhH+z
y=diff('f','T'); $#5'c+0
elseif mod(s,2)==1 S{e3aqT#N
f=p*n*L*3*((2*h*c)/(9*k*T))*((3/2)*(s+1)*(s+2)/(2*s+3))*(64*(pi^2)/15)*((c/d-(4*s+6)*B)^4)*r*exp(-(h*c*B/(k*T))*s(s+1)); V~/@KU8cH
y=diff('f','T'); >S }X)4
end Jv3G\9_
end =e# h;x2
end 7.G"U
plot3(y,s,T); RZ{O6~VH
怎么错了,希望哪位大侠指点。 J`[jub