Các câu hỏi tương tự
1) Cho bieu thuc : A= 2n +1 /n-3 + 3n-5/ n-3 - 4n-5 /n-3
a)Tim so nguyen n de A nhan gia tri nguyen
b) Tim n de A la phan so toi gian
Tim so tu nhien n de phan so A=\(\frac{2n+1}{n-3}+\frac{3n-5}{n-3}-\frac{4n-5}{n-3}\)
a/Tim n de A nhan gia tri nguyen
b/Tim n de A la phan so toi gian
cho bieu thuc :A=2n+1/n-3+3n-5/n-3-4n-5/n-3.a, tim n de a nhan gia tri nguyen .b,tim n de a la phan so toi gian
Tim so nguyen n de phan so 2n+3/7n+9 khong toi gian
tim so nguyen duong nho nhat de khi nhan no voi moi mot trong cac phan so toi gian 3/4, -5/11, 7/12 deu duoc tich la nhung so nguyen
cho bieu thuc:P= 2n+1/n-3 + 3n-5/n-3 + 4n-5/n-3
a) tim n de P nhan gia tri nguyen
b)tim n de P la phan so toi gian
Tim so nguyen duong nho nhat de khi nhan no voi moi mot phan so toi gian sau deu duoc tich la nhung so nguyen:
5/6 -7/15 11/21
tim so nguyen to n de n/74 la phan so toi gian. cac ban gup minh nhe
1 . cmr : n+1/n-2 toi gian
2 . cho A = n+10 / 2n-8 . tim cac so nguyen de A la phan so