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f
(
x
)
d
x
\int f(x)\ dx
∫
f
(
x
)
d
x
Integrals
a
(
x
−
p
)
2
+
q
a(x-p)^2 + q
a
(
x
−
p
)
2
+
q
Completing the Square
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2025 January 23
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XKCD, 2117