Whakaoti mō σ
\sigma =x^{2}-4
Whakaoti mō x (complex solution)
x=-\sqrt{\sigma +4}
x=\sqrt{\sigma +4}
Whakaoti mō x
x=\sqrt{\sigma +4}
x=-\sqrt{\sigma +4}\text{, }\sigma \geq -4
Graph
Tohaina
Kua tāruatia ki te papatopenga
\sigma =x^{2}-4
Whakaarohia te \left(x-2\right)\left(x+2\right). Ka taea te whakareanga te panoni ki te rerekētanga o ngā pūrua mā te ture: \left(a-b\right)\left(a+b\right)=a^{2}-b^{2}. Pūrua 2.
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