Giải phương trình:
$8x^{2}+8x+1=\sqrt{x+5}$
#2
Đã gửi 24-02-2013 - 09:14
ilovelife
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Có 2 nghiệm khá lẻ VD: 1 nghiệm
$x=-1/2+1/8\, \left( \sqrt{3\, \left( 8-152\,\sqrt [3]{2}\sqrt [3]{
\left( 3\, \sqrt{3458769}-4133 \right) ^{-1}}+\sqrt [3]{3/2\, \sqrt{
3458769}-{\frac {4133}{2}}} \right) ^{-1}} \right) ^{-1}-1/2\, \sqrt{1
/3-1/48\,\sqrt [3]{3/2\, \sqrt{3458769}-{\frac {4133}{2}}}+{\frac {19}
{6}}\,{\frac {\sqrt [3]{2}}{\sqrt [3]{3\, \sqrt{3458769}-4133}}}+1/8\,
\sqrt{3\, \left( 8-152\,\sqrt [3]{2}\sqrt [3]{ \left( 3\, \sqrt{
3458769}-4133 \right) ^{-1}}+\sqrt [3]{3/2\, \sqrt{3458769}-{\frac {
4133}{2}}} \right) ^{-1}}}$
$x=-1/2+1/8\, \left( \sqrt{3\, \left( 8-152\,\sqrt [3]{2}\sqrt [3]{
\left( 3\, \sqrt{3458769}-4133 \right) ^{-1}}+\sqrt [3]{3/2\, \sqrt{
3458769}-{\frac {4133}{2}}} \right) ^{-1}} \right) ^{-1}-1/2\, \sqrt{1
/3-1/48\,\sqrt [3]{3/2\, \sqrt{3458769}-{\frac {4133}{2}}}+{\frac {19}
{6}}\,{\frac {\sqrt [3]{2}}{\sqrt [3]{3\, \sqrt{3458769}-4133}}}+1/8\,
\sqrt{3\, \left( 8-152\,\sqrt [3]{2}\sqrt [3]{ \left( 3\, \sqrt{
3458769}-4133 \right) ^{-1}}+\sqrt [3]{3/2\, \sqrt{3458769}-{\frac {
4133}{2}}} \right) ^{-1}}}$
God made the integers, all else is the work of man.
People should not be afraid of their goverment, goverment should be afraid of their people.
#4
Đã gửi 09-04-2016 - 00:20
tranwhy
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Có 2 nghiệm khá lẻ VD: 1 nghiệm
$x=-1/2+1/8\, \left( \sqrt{3\, \left( 8-152\,\sqrt [3]{2}\sqrt [3]{
\left( 3\, \sqrt{3458769}-4133 \right) ^{-1}}+\sqrt [3]{3/2\, \sqrt{
3458769}-{\frac {4133}{2}}} \right) ^{-1}} \right) ^{-1}-1/2\, \sqrt{1
/3-1/48\,\sqrt [3]{3/2\, \sqrt{3458769}-{\frac {4133}{2}}}+{\frac {19}
{6}}\,{\frac {\sqrt [3]{2}}{\sqrt [3]{3\, \sqrt{3458769}-4133}}}+1/8\,
\sqrt{3\, \left( 8-152\,\sqrt [3]{2}\sqrt [3]{ \left( 3\, \sqrt{
3458769}-4133 \right) ^{-1}}+\sqrt [3]{3/2\, \sqrt{3458769}-{\frac {
4133}{2}}} \right) ^{-1}}}$
bạn copy cái này trên wolframalpha ak?? có tk vip k mà copy đk vậy ?
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