T
trongtin12


cho ham số [TEX]y=-x^3 /3 -x^2 /2 +2x + 4/3 (c)[/TEX]
viet phuong trinh tiep tuyen cua do thi (c),biet tiep tuyen co he so goc lon nhat
viet phuong trinh tiep tuyen cua do thi (c),biet tiep tuyen co he so goc lon nhat
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