Program Pr1;
uses crt;
var mas:array[1..15] of integer;
i,max,min,b,v:integer;
Begin
clrscr;
for i:=1 to 15 do mas[i]:=random(10);
for i:=1 to 15 do write(mas[i]);
max:=0;
min:=100000;
b:=0;
for i:=1 to 15 do begin
if mas[i]>max then max:=i;
if mas[i]<min then min:=i;
end;
if max>min then for i:=min to max div 2 do begin
v:=mas[max-b];
mas[max-b]:=mas[i];
mas[i]:=v;
b:=b+1;
end
else for i:=max to min div 2 do begin
v:=mas[min-b];
mas[min-b]:=mas[i];
mas[i]:=v;
b:=b+1;
end;
writeln();
for i:=1 to 15 do write(mas[i]);
end.
x
2
+
y
2
=
16
...
...
...
...
...
...
.
.
(
1
)
x + y = 4 (2)
rearrange (2) to y = 4 - x (could do x = 4 - y )
substitute y = 4 - x into (1)
hence:
x
2
+
(
4
−
x
)
2
=
16
⇒
x
2
+
16
−
8
x
+
x
2
=
16
and
2
x
2
−
8
x
+
16
−
16
=
0
⇒
2
x
2
−
8
x
=
0
factor and solve : 2x(x - 4 ) = 0
⇒
x
=
0
,
x
=
4
substitute these values into y = 4 - x , to find corresponding values of y.
x = 0 : y = 4 - 0 = 4 → (0 , 4)
x = 4 : y = 4 - 4 = 0 → (4 , 0 )
These are the points of intersection with the line x +y = 4 and the circle
x
2
+
y
2
=
16
Answer link
Объяснение:
