E
Editor
Sep 18, 2022
The middle term of the expansion $[\frac{1}{x}-\frac{x^{2}}{2}]^{12}$ is
Difficulty: Easy
A:
$\frac{231}{16}x^{6}$
B:
$-\frac{231}{10}x^{5}$
C:
$-1230x^{3}$
D:
$-3100x^{6}$
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ID: 63273db9ca83163ac3a1183b