Ngày tải lên :
23/07/2013, 01:26
... 16 11 11 + x2 + y2 x y=0 3 ban kinh cua c1: R= Pt duong tron c2 noi tiep tam giac ABC: + 2( +5 5)x 2( +5 5)y 2( +5 5) 2 x +y + +2 +2 ( + )2 =0 +5 +2 Ban kinh cua c2: r= 2. 2.ng dng phn ... GIAI `); f1:=lhs(f[1]):f2:=lhs(f [2] ):g1:=lhs(g[1]):g2:=lhs(g [2] ): a1:=coeff(f1,x):b1:=coeff(f1,y):c1:=coeff(f1,z): a2:=coeff(f2,x):b2:=coeff(f2,y):c2:=coeff(f2,z): a3:=coeff(g1,x):b3:=coeff(g1,y):c3:=coeff(g1,z): ... line(l1,[1+t,-1-t,1],t):line(l2, [2- 3*t ,2+ 3*t,3*t],t):distance(l1,l2); 2 * Tớnh khong cỏch gia ng thng v mt phng: Cõu lnh: [> distance(d,p); Vớ d: [> with(geom3d): line(d,[-3 +2* t,-1+3*t,-1 +2* t],t):plane(p ,2* x -2* y+z+3=0,[x,y,z]):distance(d,p);...