Normal
0
false
false
false
MicrosoftInternetExplorer4
Câu 1
d1;d2 lầ\.vntime""="">n lượt có VTCP $\overrightarrow{u_1}$(0;-3;1)
$;\overrightarrow{u_2}(1;-1;0)$
Gọ\.vntime""="">i →n(a;b;c) là VTPT của
(P)
ycbt⇔{→n.→u2=0|→n.→u1||→n|.|→u1|=√1315
⇔{a−b=0|3b−c|√a2+b2+c2.√10=√1315
thế\.vntime""=""> a=b vào pt (2) và bình phương ta có
15(9b2−6bc+c2)=130(2b2+c2)⇔
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman";
mso-ansi-language:#0400;
mso-fareast-language:#0400;
mso-bidi-language:#0400;}
Normal
0
false
false
false
MicrosoftInternetExplorer4
Câu 1
d1;d2 lần lượt có VTCP →u1(0;−3;1);→u2(1;−1;0)
Gọi →n(a;b;c) là VTPT của
(P)
ycbt⇔{→n.→u2=0|→n.→u1||→n|.|→u1|=√1315
⇔{a−b=0|3b−c|√a2+b2+c2.√10=√1315
thế a=b vào pt (2) và bình phương ta có
15(9b2−6bc+c2)=130(2b2+c2)⇔
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman";
mso-ansi-language:#0400;
mso-fareast-language:#0400;
mso-bidi-language:#0400;}
Normal
0
false
false
false
MicrosoftInternetExplorer4
Câu 1
d1;d2 lầ
\.vntime""="">n lượt có VTCP $\overrightarrow{u_1}$(0;-3;1)
$;\overrightarrow{u_2}(1;-1;0)$
Gọ\.vntime""="">i →n(a;b;c) là VTPT của
(P)
ycbt⇔{→n.→u2=0|→n.→u1||→n|.|→u1|=√1315
⇔{a−b=0|3b−c|√a2+b2+c2.√10=√1315
thế\.vntime""=""> a=b vào pt (2) và bình phương ta có
15(9b2−6bc+c2)=130(2b2+c2)⇔
/* Style Definitions */
table.MsoNormalTable
{mso-style-name:"Table Normal";
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-parent:"";
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:"Times New Roman";
mso-ansi-language:#0400;
mso-fareast-language:#0400;
mso-bidi-language:#0400;}