R=input('Please input R='); n\'4
p=0.1; =zPCrEk0
n=chaxun(R); vWv"
L=15; Bahm]2
c=3*10^8; pRpBhm;iJ
h=6.626196*10^(-34); hH3RP{'=
k=1.3806505*10^(-23); ^|(LAjet
B=198.95; #L;dI@7C
r=0.509*10^(-60); N!=v4f
d=532*10^(-9); ]|ag
for s=0:20 =v&hWjP
for T=0.1:50:300.1 7U"g3a)=
if mod(s,2)==0 5H9z4-i x?
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));
#A/
y=diff('f','T'); p38-l'{#
elseif mod(s,2)==1 Eyqa?$R
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)); p)-^;=<B3
y=diff('f','T'); mdg8,n
end ZJJY8k `
end 4l'fCZhA}
end f~R(D0@
plot3(y,s,T); 8/cX]J
怎么错了,希望哪位大侠指点。 F~W6Bp^W