Các câu hỏi tương tự
Cho f(x)=ax^2+bx+c. Biet f(0), f(1), f(2) la so nguyen. Chung minh f(x) luon nhan gia tri nguyen voi moi x nguyen
Cho y=f(x)=ax^3+bx^2+cx+d. Biet hamso nhan gia tri nguyen voi moi x nguyen. CM 6a, 2b, a+b+c la cac so nguyen.
CM dieu nguoc lai.
Cho P=x+2y-3z/x-2y+3z
Tinh gia tri cua P biet cac so x,y,z ti le voi 5,4,3
Giup minh voi cam on!
c1: Tap hop cac gia tri nguyen cua x thoa man \(\left(x+\frac{5}{4}\right)\left(x-\frac{19}{7}\right)\)<0
c2: Neu x,y la cac so nguyen thoa man 2xy+4y=6 thi y co the nhan nhung gia tri nam trong tap hop nao
c3: tim 3 so x,y,z biet x+y=8,x+z=10,y+z=12
C4: Gia tri cua x thoa man (x+3)^2=25 va x^3>0 la x=
Cac ban oi giup minh voi
tim x biet 6.4/x=x/99tim cac so nguyen biet (|x|-3)(x^2+4) be hon hoac bang 4hai dia diem a va b cach nhau 90kmhai nguoi di xe dap cung mot luc tu ava bde gap nhau va ho gap nhau cach a 50km;nhung neu nguoi di tu b di nhanh hon xuat phat truoc nguoi a 1 gio thi ho gap nhau cach a 350/9km tinh van toc moi nguoiCac giai ho minh voi minh se tick cho
Cac ban nho viet ho cach lam min voi
gia su x=a/m, y=b/m (a,b,m thuoc z, m>0) va x<y.hay chung to rang neu chon z=a+b/2m thi ta co x<z<y.
minh moi hoc lop 7 minh ko hieu bai nay ai giai giup minh voi
tim gia tri nho nhat cua bieu thuc P = 14-x/4-x ; ( x thuoc z) khi do xnhan gia tri nguyen nao
tim cac gia tri nguyen cua x de bieu thuc sau nhan gia tri duong (x+1).(x-2)/x+6
cho hai da thuc
A(x)=\(^{x^5-2x^3+3x^4-9x^2+11x-6}\)
B(x)=\(3x^4+x^5-2\left(x^3+4\right)-10x^2+9x\) tinh C(x)=A(x)+B(x)
tim x de C(x)=\(2x+2\)
chung to rang C(x) khong the nhan gia tri bang 2012 voi moi x thuoc Z