This commit is contained in:
2026-02-04 11:12:42 -08:00
parent 324c3f0002
commit 9cac4a5f7f

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@@ -19,7 +19,7 @@ $$
u - u^{-1} = 4i u - u^{-1} = 4i
$$ $$
$$ $$
u^2 - 1 = 4iu $$ u^2 - 1 = 4iu
$$ $$
u^2 - 4iu - 1 = 0 u^2 - 4iu - 1 = 0
$$ $$
@@ -27,13 +27,13 @@ $$
u^2 - 4iu - 4 = -3 u^2 - 4iu - 4 = -3
$$ $$
$$ $$
(u - 2i)^2 = -3 \\ (u - 2i)^2 = -3
$$ $$
$$ $$
u - 2i = \pm \sqrt {-3} u - 2i = \pm \sqrt {-3}
$$ $$
$$ $$
u = 2i \pm \sqrt {-3} \\ u = 2i \pm \sqrt {-3}
$$ $$
$$ $$
u = i(2 \pm \sqrt 3) u = i(2 \pm \sqrt 3)