chung to rang phan so 2n+1/3n+2 la phan so toi gian
chung to rang vs moi so tu nhien n , phan so n^3+2n/n^4+3n^2+1 la 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 dang n+1/2n+3 ( n thuoc N ) deu la phan so toi gian.
cho phan so p=6n+5/3n+2 (n thuoc N)
chung minh rang phan so p la phan so toi gian
giup minh nhe
chung to rang moi phan so co dang 2*n+3/3*n+5 la phan so toi gian
chung to rang 12n+1 phan 30n+2 la phan so toi gian
Cau 1: Chung minh rang cac phan so sau la phan so toi gian voi moi so nguyen?
a, 8n + 5 phan 6n + 4 b, n + 1 phan 2n + 3 c, 2n + 3 phan 3n + 5
Cau 2: Tim tat ca cac so tu nhien n de phan so sau la toi gian
a, n + 13 phan n - 2. b, 18n + 3 phan 21n + 7
Ai giai day du va nhanh thi mk se tick cho
chung to \(\frac{2n+5}{n+3}\) la phan so toi gian