1.
a. sqr(a+b)-x/y
b. b/(a*a+c)
c. a*a/(sqr(2*b+c))
d. 1+1/2+1/2*3+1/2*4+1/2*5
2.
program btsydn;
uses crt;
var a, b: real;
begin
clrscr;
write('Nhap chieu dai = '); readln(a);
write('Nhap chieu rong = '); readln(b);
writeln('Chu vi hinh chu nhat: ', (a+b)*2);
writeln('Dien tich hinh chu nhat: ', a*b);
readln
end.
3.
program btsydn;
uses crt;
var n: real;
begin
clrscr;
write('Nhap n = '); readln(n);
if n mod 2 = 0 then write(n, ' la so chan') else (n, ' la so le');
readln
end.
