Trong hệ nhị phân thì 1+1=10 các bác ơi :v
Trong hệ nhị phân thì 1+1=10 các bác ơi :v
cho p la so nguyen to lon hon 3 chung minh rang p^2-1 chia het cho 24
Chung minh rang dieu kien can va du de p va 8p2+1 la cac so nguyen to la p=3
cho p la so nguyen to lon hon 3 chung minh rang p^2+2012 la hop so
ae jup minh voi
Cho f(x)=ax^2+bx+c. Biet f(0), f(1), f(2) la so nguyen. Chung minh f(x) luon nhan gia tri nguyen voi moi x nguyen
Cho a la so nguyen. Chung minh
A/3 cong a2 /2 cong a3/6 la so nguyen
cho p va p^2+8 la so nguyen to .C/minh p^2+2 la so nguyen to.
cho p va p^2+8 la so nguyen to .C/minh p^ 2+2 la so nguyen to.
2 so nguyen to cung nhau la 2 so co bao nhieu uoc chung
cho A = 1 - 3/4 + (3/4)^2 - ...-(3/4)^2009 + (3/4)^2010
chung to A k phai la so nguyen