var ksu nr kr real integer const eps 0e-8 m1 938 272e6 m2 939 565e6 97

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var
ksu,n,u,r,nr,kr,s: real;
i,k:integer;
const
eps = 1.0e-8;
m1=938.272e6;
m2=939.565e6;
h=1.97e-5;
e=2.224e6;
pm=m1*m2/(m1+m2);
a=1;
b=pi-100*eps;
function nu(r:real): real;
begin
result:=sqrt((2*pm*e*sqr(r))/sqr(h));
end;
function getU(ksu,n,r: real): real;
var g:real;
begin
g:=sqr(h)/(2*pm*sqr(r));
result:=g*(sqr(ksu)+sqr(n));
end;
function f(x: real): real;
begin
f := -x * (cos(x) / sin(x)) -n;
end;
function podbor(a, b: real): real;
var
c: real;
begin
c := (a + b) / 2;
while not ((abs(f(c)) < eps) and (((b - a) / 2) < eps)) do
begin
if f(c) = 0 then break;
if f(a) * f(c) < 0 then b := c else a := c;
c := (a + b) / 2;
end;
Result:= c;
end;
procedure getparametrs(var nr:real; var kr:real; var k:integer);
label l;
var
s,f:real;
ksh:integer;
begin
l:
writeln('введите интервал ферми [начало конец] (без скобок)'); readln(s,f);
if s>f then goto l;
writeln('введите количество шагов'); readln(ksh);
nr:=s/1e13;
kr:=f/1e13;
k:=ksh;
end;
begin
getparametrs(nr,kr,k);
s:=abs(kr-nr)/(k);
for i:=0 to k do
begin
r:=nr+i*s;
n:=nu(r);
ksu:= podbor(a, b);
u:=getU(ksu,n,r);
writeln(i,'. ',(r*1e13),' - ',u/1000000);
end;
end.