Chứng minh rang phan so sau toi gian voi moi n thuộc N
2n+1/2n(n+1)
Lam dung va nhanh nht minh cho 3 tick
Lam dung va nhanh nhi mink cho 2 tich
......................... .......ba mình k cho 1 tick
Chung minh rang phan so sau toi gian voi moi n thuoc N 2n+1/2n(n+1)
cach lam bai : chung to rang moi phan so co dang n+2015/n+2016 ( voi n thuoc N ) deu la phan so toi gian
Chung to rang phan so sau toi gian voi mọi n thuộc N
2n+1/2n(n+1)
Chung minh rang voi n thuoc N*, cac phan so toi gian.
a) 3n-2/4n-3 b) 4n+1/6n+1
Lam day du ho minh nhe! Cam on moi nguoi nhieu!
Chung minh rang moi phan so dang n+1/2n+3 ( n thuoc N ) deu la phan so toi gian.
chung to rang voi moi so nguyen n phan so 3n-5/3-2nla phan so toi gian
chung minh rang moi phan so sau toi gian voi moi so tu nhien n:
a.n+1/2n+3 b.2n+3/4n+8
cho phan so duong m/n toi gian .chung to m/n+m*n la phan so toi gian
ai dang len lam ho minh nha
nguoi dau tien minh se tick vi nick cua minh chi duoc tick co 1 cai cho 1 cau tra loi thoi
minh can ngay lam ho nha
x x x x x