sin x和arc sinx.的值在大小上是什么关系
y=sin\uff08arcsinx\uff09\u4e0ey=x\u600e\u4e48\u8bf4\u660e\u4ed6\u4eec\u662f\u4e0d\u76f8\u540c\u51fd\u6570y=sin\uff08arcsinx\uff09=x
\u4f46x\u662f\u4e00\u4e2a\u89d2\u7684\u6b63\u5f26\u503c
\u2234x\u2208[-1,1]
\u51fd\u6570y=x\u4e2d\uff0cx\u2208R
\u4e24\u4e2a\u51fd\u6570\u7684\u5b9a\u4e49\u57df\u4e0d\u4e00\u6837\uff0c\u56e0\u6b64\u4ed6\u4eec\u662f\u4e0d\u76f8\u540c\u51fd\u6570
\u7b80\u4ecb
\u51fd\u6570\uff08function\uff09\u7684\u5b9a\u4e49\u901a\u5e38\u5206\u4e3a\u4f20\u7edf\u5b9a\u4e49\u548c\u8fd1\u4ee3\u5b9a\u4e49\uff0c\u51fd\u6570\u7684\u4e24\u4e2a\u5b9a\u4e49\u672c\u8d28\u662f\u76f8\u540c\u7684\uff0c\u53ea\u662f\u53d9\u8ff0\u6982\u5ff5\u7684\u51fa\u53d1\u70b9\u4e0d\u540c\uff0c\u4f20\u7edf\u5b9a\u4e49\u662f\u4ece\u8fd0\u52a8\u53d8\u5316\u7684\u89c2\u70b9\u51fa\u53d1\uff0c\u800c\u8fd1\u4ee3\u5b9a\u4e49\u662f\u4ece\u96c6\u5408\u3001\u6620\u5c04\u7684\u89c2\u70b9\u51fa\u53d1\u3002\u51fd\u6570\u7684\u8fd1\u4ee3\u5b9a\u4e49\u662f\u7ed9\u5b9a\u4e00\u4e2a\u6570\u96c6A\uff0c\u5047\u8bbe\u5176\u4e2d\u7684\u5143\u7d20\u4e3ax\uff0c\u5bf9A\u4e2d\u7684\u5143\u7d20x\u65bd\u52a0\u5bf9\u5e94\u6cd5\u5219f\uff0c\u8bb0\u4f5cf\uff08x\uff09\u3002
\u5f97\u5230\u53e6\u4e00\u6570\u96c6B\uff0c\u5047\u8bbeB\u4e2d\u7684\u5143\u7d20\u4e3ay\uff0c\u5219y\u4e0ex\u4e4b\u95f4\u7684\u7b49\u91cf\u5173\u7cfb\u53ef\u4ee5\u7528y=f\uff08x\uff09\u8868\u793a\uff0c\u51fd\u6570\u6982\u5ff5\u542b\u6709\u4e09\u4e2a\u8981\u7d20\uff1a\u5b9a\u4e49\u57dfA\u3001\u503c\u57dfB\u548c\u5bf9\u5e94\u6cd5\u5219f\u3002\u5176\u4e2d\u6838\u5fc3\u662f\u5bf9\u5e94\u6cd5\u5219f\uff0c\u5b83\u662f\u51fd\u6570\u5173\u7cfb\u7684\u672c\u8d28\u7279\u5f81\u3002
arcsinx=t\uff0carc\u662f\u53cd\u4e09\u89d2\u51fd\u6570\uff0c\u5b83\u548csint=x\u4e92\u4e3a\u53cd\u51fd\u6570\uff0c\u5c31\u50cf\u6307\u6570\u51fd\u6570\u548c\u5bf9\u6570\u51fd\u6570\u7684\u5173\u7cfb\uff0c\u901a\u4fd7\u7684\u8868\u8fbe\u4e00\u4e0barcsinx=t
\u4e3e\u4e2a\u4f8b\u5b50sin 30\u00b0=0.5 \u90a3\u4e48\u5c31\u53ef\u4ee5\u5f97\u5230arcsin0.5=30\u00b0
\u4e00\u822c\u8bf4\u6765arcsinx\u5b9a\u4e49\u57df\u662f-90~90
扩展阅读：arc sin 0 ... sin 2π x ... sin x ... cos arctan x ... limx tanx ... sinx<x<tanx适用范围 ... arcsin计算大全 ... arcsin sinx 为什么等于x ... tanxlnsinx ...
