tim x thuoc z de cac phan so sau co gia tri la sô nguyên
a , A=3/2-1
b, B=4x+1/2x+3
c C=x+7x+4
voi gia tri nao cua x thuoc tap hop so nguyen cac phan so sau co gia tri la 1 so nguyen
a.A=3/x-1 b.B=x-2/x+3
c.C=2x+1/x-3 d.D=x^2-1/x+1
voi gia tri nao cua x thuoc Z cac ps sau co gia tri la so nguyen
a.A=3/x-1 b.B=x-2\x+3
c.C=2x+1\x-3 d.D=x^2-1/x+1
voi gia tri nao cua x\(\varepsilon\)Z thi B=\(\frac{2x+1}{x-3}\) có gia tri la 1 so nguyen
cho phan so A=63/3n+1 ( n thuoc N)
a. Voi gia tri nao cua n thi A rut gon duoc
b. Voi gia tri nao cua n thi A la mot so tu nhien
cho bieu thuc a=2n+2/2n-4 (N thuoc Z)
a) voi gia tri nao cua n de a la phan so
b) tim cac so co gia tri cua n de là so nhuyen
2n+2 phan 2n-4
gia tri cua x de A=m*(5x+15)*(3-x)/2x-6 co gia tri =0 voi moi m thuoc Z
Cho A=n+3/n+2 voi n€z
a)tim dieu kien cua so nguyen n de A la phan so
b)tinh gia tri cua phan so A khi n=1;n=-1
c)tim so nguyen n de phan so A co gia tri la so nguyen
tim gia tri nho nhat va lon nhat cua phan so sau voi x thuoc Z: \(\frac{4x-1}{3x-2}\)
