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修改一下006468的答案

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zhugemengtian 2023-08-01 23:43:48 +08:00
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题库0.3/Problems.json
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@ -179123,7 +179123,7 @@
], ],
"genre": "解答题", "genre": "解答题",
"ans": "$x=\\pi+\\arcsin \\dfrac 13$", "ans": "$x=\\pi+\\arcsin \\dfrac 13$",
"solution": "因为$\\sin (\\pi -x)=\\sin x=-\\dfrac 13$, 且由$\\pi <x<\\dfrac{3\\pi }2$知, $-\\dfrac{\\pi }2<\\pi -x<0$,\n所以$\\pi -x=\\arcsin (-\\dfrac 13)=-\\arcsin \\dfrac 13$, 于是$x=\\pi +\\arcsin \\dfrac 13$.", "solution": "因为$\\sin (x- \\pi)=-\\sin x=\\dfrac 13$, 且由$\\pi <x<\\dfrac{3\\pi }2$知, $0<x- \\pi<\\dfrac{\\pi }2$,\n所以$x- \\pi=\\arcsin (\\dfrac 13)$, 于是$x=\\pi +\\arcsin \\dfrac 13$.",
"duration": -1, "duration": -1,
"usages": [ "usages": [
"20220920\t2023届高三01班\t0.933", "20220920\t2023届高三01班\t0.933",