Объяснение:
1.
// описание функции, ее можно менять
function func(in_x:real):real;
begin
func:=-2*in_x*in_x*in_x*in_x*in_x + 4;
end;
var
h:real;
x:real;
a, b:real;
count_otr:integer;
begin
writeln('Input a = ');
readln(a);
writeln('Input b = ');
readln(b);
writeln('Input h = ');
readln(h);
count_otr:=0;
x:=a;
while (x <= b) do begin
{writeln('x = ', x:3:3, ' f = ', func(x));}
if (func(x)<0) then count_otr:=count_otr + 1;
x:=x+h;
end;
writeln(count_otr);
readln;
end.
2.
function func(in_x:real):real;
begin
func:=-2*in_x*in_x*in_x*in_x*in_x + 4;
end;
var
h:real;
x:real;
a, b:real;
f_min, x_min:real;
begin
writeln('Input a = ');
readln(a);
writeln('Input b = ');
readln(b);
writeln('Input h = ');
readln(h);
x_min:=a;
f_min:=func(a);
x:=a+h;
while (x <= b) do begin
{writeln('x = ', x:3:3, ' f = ', func(x));}
if (func(x)<f_min) then x_min:=x;
x:=x+h;
end;
writeln('x min = ', x_min:3:3, ', f min = ', func(x_min):3:3);
readln;
end.
Объяснение:
1.
var
a:array[1..1000] of integer;
i, n:integer;
count:integer;
begin
writeln('Input n = ');
readln(n);
for i:=1 to n do begin
writeln('Input a[', i, '] = ');
readln(a[i]);
end;
count:=0;
i:=1;
while (i<=n) do begin
if (((a[i] mod 3) = 0) and ((a[i] - (a[i] div 10)*10) = 2)) then count:=count + 1;
i:=i+1;
end;
writeln(count);
readln;
end.
2.
var
a:array[1..1000] of integer;
i, n:integer;
count:integer;
begin
writeln('Input n = ');
readln(n);
for i:=1 to n do begin
writeln('Input a[', i, '] = ');
readln(a[i]);
end;
count:=0;
i:=1;
repeat
if (((a[i] mod 3) = 0) and ((a[i] - (a[i] div 10)*10) = 2)) then count:=count + 1;
i:=i+1;
until (i > n);
writeln(count);
readln;
end.