tim gia tri lon nhat cua A=\(\frac{4x^2}{x^4+1}\)
tim gia tri lon nhat khi B=5/3x^2+4x+15
1.gia tri nho nhat cua bieu thuc A=\(\frac{x^2}{4}+3x+y^2-\frac{14}{5}y+\frac{425}{25}\)la
2.cho x, y nguyen thoa man x2+4x+y2-12=0 . khi do gia tri lon nhat P=x2+y2 la Pmax=?
Tim gia tri nho nhat A=x2-2x
Tim gia tri lon nhat B=-x2+4x-5
Chung minh rang: x4+6x3+11x2+6x chia het cho 24 voi moi x thuoc N
Tim gia tri lon nhat cua P= -5x^2 - 4x + 1
tim gia tri lon nhat
C= 3/(4x2-4x+5)
tim gia' tri. lon' nhat' cua? bieu thuc
F=-x^2-4x+20
tim gia tri lon nhat cua bieu thuc A=3-4x/x2+1
tim gia tri lon nhat
C= 3 / (4x2-4x+5)
giai cu the ra nhe