Tim gia tri lon nhat va gia tri nho nhat cua bieu thuc sau: A=\(\frac{x+1}{x^2+x+1}\)
Tim Gia Tri Nho Nhat Cua
a) A = x - 4 can x + 9
b) B = x - 3 can x - 10
c ) C = x - can x + 1
d ) D = x + can x + 2
Tim gia tri nho nhat cua Q(x)= x(x-1)(x-2)(x-3)
tim gia tri nho nhat cua A=\(\frac{2010x+2680}{x^2+1}\)
tim gia tri nho nhat cua \(\frac{1}{1+xy}+\frac{1}{1+yz}+\frac{1}{1+xz}\)voi x;y;z>0 va x^2+y^2+z^2<=3
Tim gia tri nho nhat cua \(y=\frac{x+3\sqrt{x-1}+1}{x+4\sqrt{x-1}+2}\) voi x\(\ge\) 1
tim gia tri nho nhat cua P=\(\frac{x+3\sqrt{x}+2}{x}\)
Cho A \(\left(\frac{x-\sqrt{x}}{\sqrt{x}-1}+\frac{\sqrt{x}+1}{X+\sqrt{X}}\right):\frac{\sqrt{X}+1}{X}\)
a)Tìm dk cua x de A co nghia
b)Rut gon A
c)Tim gia tri nho nhat cua A
a\Rut gon bieu thuc
b/Tim gia tri nho nhat cua 4A
A=\(\frac{5\sqrt{x}+4}{x+\sqrt{x}-2}+\frac{\sqrt{x}-1}{\sqrt{x}+2}-\)\(\frac{\sqrt{x}+2}{\sqrt{x}-1}\)
