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def generate_sequence(n):
"""Generates the sequence A up to the nth term."""
if n < 0:
return "Please enter a non-negative number."
sequence = [] # This list will hold our sequence
if n >= 0:
sequence.append(1) # A[0] = 1
if n >= 1:
sequence.append(3) # A[1] = 3
for i in range(2, n + 1):
# Calculate A[i] using the rule: A[i] = A[i-1] * 2 * A[i-2]
next_term = sequence[i - 1] * 2 * sequence[i - 2]
sequence.append(next_term)
return sequence
# Let's see the sequence up to the 5th term (A[0] to A[5])
result = generate_sequence(5)
print(result) # Output: [1, 3, 6, 36, 432, 31104]
#include <bits/stdc++.h>
using namespace std;
int main(){
int n;
cin >> n;
int a[n][n];
for (int i=0; i<n;i++)
for (int j=0;j<n;j++)
a[i][j]=0;
for (int i=0; i<n;i++){
for (int j=0;j<n;j++)
cout << a[i][j];
cout <<endl;
}
return 0;
}
# Initialize a 2D array with zeros a = [[0 for _ in range(n)] for _ in range(n)]
# Print the 2D array for row in a: print(" ".join(map(str, row)))
1: tính tổng của \(S=1+\frac{1}{2^2}+\frac{1}{3^2}+\frac{1}{4^2}+...+\frac{1}{100^2}\)
uses crt;
var s:real;
i:integer;
begin
clrscr;
s:=0;
for i:=1 to 100 do
s:=s+1/(sqr(i));
writeln('tong cua day so la: ',s);
readln;
end.
2: tính tổng \(S=1+\frac{1}{3^2}+\frac{1}{5^2}+\frac{1}{7^2}+...+\frac{1}{n^2}\)
uses crt;
var s:real;
n,i:integer;
begin
clrscr;
write('n='); readln(n);
s:=0;
for i:=1 to n do
if i mod 2=1 then s:=s+1/(sqr(i));
writeln('tong cua day so la: ',s:4:2);
readln;
end.
quá dễ
bài 1:
uses crt;
var a,b:integer;
begin
clrscr;
write('a='); readln(a);
write('b='); readln(b);
if a=0 then
if b=0 then writeln('phuong trinh co vo so nghiem')
else writeln('phuong trinh vo nghiem')
else writeln('phuong trinh co nghiem x=',-b/a:4:2);
readln;
end.
bài 2:
uses crt;
var x,y,a,b,ucln:integer;
{---------------------------------------------------------}
procedure nhap(var n:integer);
begin
write('nhap mot so nguyen bat ky='); readln(n);
end;
{---------------------------------------------------------}
procedure rutgon(var a,b:integer);
var x,y,ucln:integer;
begin
x:=a;
y:=b;
while x<>y do
begin
if x>y then x:=x-y
else y:=y-x;
end;
ucln:=x;
if ucln<>1 then
begin
a:=a div ucln;
b:=b div ucln;
writeln('phan so toi gian la: ',a,'/',b);
end
else writeln('phan so toi gian la: ',a,'/',b);
end;
{----------------------------------------------------------}
begin
clrscr;
nhap(a);
nhap(b);
rutgon(a,b);
readln;
end.
Đáp án đúng : B