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

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

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

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 tu nhien n de phan so A=\(\frac{8n+193}{4n+3}\)

a,co gia tri la so tu nhien

b, la phan so toi gian

tim cac so tu nhien n de cac phan so sau la phan so toi gian a) 2n+3:4n+1 b) 3n+2:7n+1 c) 2n+7:5n+2

Cho: A= \(\frac{n+1}{n-3}\)

a) Tim nde A la phan so.

b) Tim n de A la phan so toi gian.

c) Tim n de A co gia tri lon nhat.

cho phan so \(B=\frac{4n+1}{2n-3}\)n thuoc z

a, tim n de phan so B toi gian

b, tim n de B dat gia tri nho nhat , gia tri lon nhat va tinh cac gia tri do.

tim cac so tu nhien n de cac phan so sau la phan so toi gian

2n+3 tren 4n+1