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utnapishti
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no subject
Date:
2018-05-18 07:23 pm (UTC)
From:
utnapishti.livejournal.com
В "vertex form" (не знаю, как оно по-русски)
a(x-p)
2
+ 1/a
.
А всё потому, что
y=ax
2
пересекается с
y=x
при
x=1/a
.
Проверяем, что правильно догадались:
– Вершина
(p, 1/a)
.
– Корни:
a(x-p)
2
+ 1/a = 0
(x-p)
2
= -1/a
2
(x-p) = ± i/a
x = p ± i/a
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timeasmymeasuretimeasmymeasure
no subject
Date: 2018-05-18 07:23 pm (UTC)a(x-p)2 + 1/a.
А всё потому, что y=ax2 пересекается с y=x при x=1/a.
Проверяем, что правильно догадались:
– Вершина (p, 1/a).
– Корни:
a(x-p)2 + 1/a = 0
(x-p)2 = -1/a2
(x-p) = ± i/a
x = p ± i/a