процедуры и функции паскаль

[АсяЯ]

помогите пожалуйста

[type_Oleg]

3.

const LENAR=10;
type tArr=array[1..LENAR]of Real;
function MeanX(sample:tArr):Real;
procedure DispVarX(sample:tArr;var D,sigma:Real);
// и т.д.

[newerow1989]

1.

uses Math;

function f(a,m,p:real):real;
begin
   Result:=(Power(a,p)+Power(a,-p))/(2*Power(a,m)-Power(a,m-p));
end;

var a,m,p:integer;
    r:real;
begin
   Write('a = '); Readln(a);
   Write('m = '); Readln(m);
   Write('p = '); Readln(p);
   r:=f(a,m,p);
   Writeln(r:5:10);
   Readln;
end.

2.

function sum(x:real):real;
var i:integer;
    xi:real;
begin
   Result:=0;
   xi:=1;
   For i:=1 to 8 do
   begin
      xi:=xi*x;
      Result:=Result+xi/i;
   end;
end;

var i:integer;
    x,y:array[1..6] of real;
begin
   Randomize;
   For i:=1 to 6 do
   begin
      x[i]:=Random(20)+Random;
      y[i]:=Exp(-x[i])*ArcTan(x[i])-sum(x[i]);
      Writeln(x[i]:5:8,'  ',y[i]:5:8);
   end;
   Readln;
end.

3.

function MM(x:array of real):real;
var i:integer;
begin
   Result:=0;
   For i:=1 to 10 do
      Result:=Result+x[i];
   Result:=Result/10;
end;

procedure DB(x:array of real; var D,B:real);
var i:integer;
    M:real;
begin
   M:=MM(x);
   D:=0;
   For i:=1 to 10 do
      D:=D+(x[i]-M)*(x[i]-M);
   D:=D/10;
   B:=Sqrt(D);
end;

var i:integer;
    a,b,c:array[1..10] of real;
    M,D,Bi:real;
begin
   Randomize;
   For i:=1 to 10 do
   begin
      a[i]:=Random(10)+Random;
      b[i]:=Random(10)+Random;
      c[i]:=Random(10)+Random;
      Writeln('    ',a[i]:10:6,'  ',b[i]:10:6,'  ',c[i]:10:6);
   end;
   Writeln;
   M:=MM(a);
   Write('M = ',M:10:6);
   M:=MM(b);
   Write('  ',M:10:6);
   M:=MM(c);
   Writeln('  ',M:10:6);
   DB(a,D,Bi);
   Writeln('D = ',D:10:6);
   Writeln('B = ',Bi:10:6);
   Writeln;
   DB(b,D,Bi);
   Writeln('D = ',D:10:6);
   Writeln('B = ',Bi:10:6);
   Writeln;
   DB(c,D,Bi);
   Writeln('D = ',D:10:6);
   Writeln('B = ',Bi:10:6);
   Writeln;
   Readln;
end.