Whakaoti mō x (complex solution)
x=\frac{-\sqrt{3}i+1}{2}\approx 0.5-0.866025404i
x=-1
x=\frac{1+\sqrt{3}i}{2}\approx 0.5+0.866025404i
Whakaoti mō x
x=-1
Graph
Pātaitai
Polynomial
x ^ { 3 } + 1 = 0
Tohaina
Kua tāruatia ki te papatopenga
±1
Tā te Rational Root Theorem, ko ngā pūtake whakahau katoa o tētahi pūrau kei te āhua o \frac{p}{q}, ina wehea e p te kīanga pūmau 1, ā, ka wehea e q te whakarea arahanga 1. Whakarārangitia ngā kaitono katoa \frac{p}{q}.
x=-1
Kimihia tētahi pūtake pērā mā te whakamātau i ngā uara tau tōpū katoa, e tīmata ana i te mea iti rawa mā te uara pū. Mēnā kāore he pūtake tau tōpū e kitea, whakamātauria ngā hautanga.
x^{2}-x+1=0
Mā te whakatakotoranga Tauwehe, he tauwehe te x-k o te pūrau mō ia pūtake k. Whakawehea te x^{3}+1 ki te x+1, kia riro ko x^{2}-x+1. Whakaotihia te whārite ina ōrite te hua ki te 0.
x=\frac{-\left(-1\right)±\sqrt{\left(-1\right)^{2}-4\times 1\times 1}}{2}
Ka taea ngā whārite katoa o te momo ax^{2}+bx+c=0 te whakaoti mā te ture pūrua: \frac{-b±\sqrt{b^{2}-4ac}}{2a}. Whakakapia te 1 mō te a, te -1 mō te b, me te 1 mō te c i te ture pūrua.
x=\frac{1±\sqrt{-3}}{2}
Mahia ngā tātaitai.
x=\frac{-\sqrt{3}i+1}{2} x=\frac{1+\sqrt{3}i}{2}
Whakaotia te whārite x^{2}-x+1=0 ina he tōrunga te ±, ina he tōraro te ±.
x=-1 x=\frac{-\sqrt{3}i+1}{2} x=\frac{1+\sqrt{3}i}{2}
Rārangitia ngā otinga katoa i kitea.
±1
Tā te Rational Root Theorem, ko ngā pūtake whakahau katoa o tētahi pūrau kei te āhua o \frac{p}{q}, ina wehea e p te kīanga pūmau 1, ā, ka wehea e q te whakarea arahanga 1. Whakarārangitia ngā kaitono katoa \frac{p}{q}.
x=-1
Kimihia tētahi pūtake pērā mā te whakamātau i ngā uara tau tōpū katoa, e tīmata ana i te mea iti rawa mā te uara pū. Mēnā kāore he pūtake tau tōpū e kitea, whakamātauria ngā hautanga.
x^{2}-x+1=0
Mā te whakatakotoranga Tauwehe, he tauwehe te x-k o te pūrau mō ia pūtake k. Whakawehea te x^{3}+1 ki te x+1, kia riro ko x^{2}-x+1. Whakaotihia te whārite ina ōrite te hua ki te 0.
x=\frac{-\left(-1\right)±\sqrt{\left(-1\right)^{2}-4\times 1\times 1}}{2}
Ka taea ngā whārite katoa o te momo ax^{2}+bx+c=0 te whakaoti mā te ture pūrua: \frac{-b±\sqrt{b^{2}-4ac}}{2a}. Whakakapia te 1 mō te a, te -1 mō te b, me te 1 mō te c i te ture pūrua.
x=\frac{1±\sqrt{-3}}{2}
Mahia ngā tātaitai.
x\in \emptyset
Tā te mea e kore te pūrua o tētahi tau tōraro e tautohutia ki te āpure tūturu, kāhore he rongoā.
x=-1
Rārangitia ngā otinga katoa i kitea.
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