R=input('Please input R='); ` MlQPLH
p=0.1; jn>3(GRGC$
n=chaxun(R); ez&v"J
L=15; |8 c3%jve
c=3*10^8;
vr /V_
h=6.626196*10^(-34); VZ'[\ 3J
k=1.3806505*10^(-23); YwQxN"
B=198.95; GN?^7kI
r=0.509*10^(-60); }RYr)
d=532*10^(-9); t@QaxZIlt;
for s=0:20 T|Sz~nO}f
for T=0.1:50:300.1 >B U 0B
if mod(s,2)==0 Mi,yg=V
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)); ]C3{ _?=
y=diff('f','T'); Oj\lg2Ck
elseif mod(s,2)==1 Q}d6+ C
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)); OGh9^,v
y=diff('f','T'); [0El z@.C
end M9HM:
end ^]( sCE7
end {3@ f(H m
plot3(y,s,T); Dz:A.x@$*
怎么错了，希望哪位大侠指点。 CO%7^}xSE,
