{"id":145,"date":"2013-12-21T12:32:03","date_gmt":"2013-12-21T04:32:03","guid":{"rendered":"http:\/\/www.xuehelp.cn\/?p=145"},"modified":"2013-12-21T12:33:43","modified_gmt":"2013-12-21T04:33:43","slug":"%e6%a0%b9%e6%8d%ae%e5%87%bd%e6%95%b0%e5%a5%87%e5%81%b6%e6%80%a7%e6%b1%82%e6%8a%bd%e8%b1%a1%e5%87%bd%e6%95%b0%e8%a7%a3%e6%9e%90%e5%bc%8f%e7%9a%84%e5%8f%96%e5%80%bc%e8%8c%83%e5%9b%b410%e9%a2%98%e9%9b%86","status":"publish","type":"post","link":"http:\/\/www.xuehelp.cn\/index.php\/archives\/145","title":{"rendered":"\u6839\u636e\u51fd\u6570\u5947\u5076\u6027\u6c42\u62bd\u8c61\u51fd\u6570\u89e3\u6790\u5f0f\u7684\u53d6\u503c\u8303\u56f410\u9898\u96c6\u4e2d\u7ec3\u4e60"},"content":{"rendered":"

\u5185\u5bb9\u6458\u8981\uff1a<\/strong><\/p>\n

\u6839\u636e\u51fd\u6570\u5947\u5076\u6027\u6c42\u62bd\u8c61\u51fd\u6570\u89e3\u6790\u5f0f\u7684\u53d6\u503c\u8303\u56f410\u9898\u96c6\u4e2d\u7ec3\u4e60<\/span><\/p>\n

1.\u5b9a\u4e49\u57df\u4e3a<\/span>R<\/span>\u7684\u5947\u51fd\u6570<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\u662f\u51cf\u51fd\u6570\uff0c\u5f53\u4e0d\u7b49\u5f0f<\/span>f<\/span>\uff08<\/span>a<\/span>\uff09<\/span>+f<\/span>\uff08<\/span>a<\/span>2\uff09\uff1c0<\/span>\u6210\u7acb\u65f6\uff0c\u5b9e\u6570<\/span>a<\/span>\u7684\u53d6\u503c\u8303\u56f4\u662f\uff08\u3000\uff09<\/span><\/p>\n

2.\u8bbe\u5947\u51fd\u6570<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\u662f\u5b9a\u4e49\u5728<\/span>[-2<\/span>\uff0c<\/span>2]<\/span>\u4e0a\u7684\u51cf\u51fd\u6570\uff0c\u82e5<\/span>f<\/span>\uff08<\/span>1-m<\/span>\uff09\uff1c<\/span>f<\/span>\uff08<\/span>m<\/span>\uff09\uff0c\u6c42\u5b9e\u6570<\/span>m<\/span>\u7684\u53d6\u503c\u8303\u56f4<\/span><\/p>\n

3.\u8bbe\u5b9a\u4e49\u5728<\/span>[-2<\/span>\uff0c<\/span>2]<\/span>\u4e0a\u7684\u5947\u51fd\u6570<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\u5728<\/span>[0<\/span>\uff0c<\/span>2]<\/span>\u4e0a\u662f\u51cf\u51fd\u6570\uff0c\u82e5<\/span>f<\/span>\uff08<\/span>1-m<\/span>\uff09\uff1c<\/span>f<\/span>\uff08<\/span>m<\/span>\uff09\u6c42<\/span>m<\/span>\u7684\u53d6\u503c\u8303\u56f4\uff0e<\/span><\/p>\n

4.\u00a0\u82e5\u5947\u51fd\u6570f\uff08x\uff09\u5728R\u4e0a\u662f\u5355\u8c03\u9012\u589e\u51fd\u6570\uff0c\u4e14\u6709f\uff08a\uff09+f\uff083\uff09\uff1c0\uff0c\u5219a\u7684\u53d6\u503c\u8303\u56f4\u662f<\/p>\n

5.\u00a0\u5df2\u77e5\u5b9a\u4e49\u5728\uff08-1<\/span>\uff0c<\/span>1<\/span>\uff09\u4e0a\u7684\u5947\u51fd\u6570<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\u4e3a\u51cf\u51fd\u6570\uff0c\u4e14<\/span>f<\/span>\uff08<\/span>1-a<\/span>\uff09<\/span>+f<\/span>\uff08<\/span>2a<\/span>\uff09\uff1c<\/span>0<\/span>\uff0c\u5219<\/span>a<\/span>\u7684\u53d6\u503c\u8303\u56f4<\/span>\uff0e<\/p>\n

6.\u00a0\u82e5\u5947\u51fd\u6570f<\/span>\uff08<\/span>x<\/span>\uff09\u5728\uff08<\/span>–<\/span>\u221e\uff0c<\/span>0<\/span>\uff09\u4e0a\u662f\u589e\u51fd\u6570\uff0c\u4e14<\/span>f<\/span>\uff08<\/span>-1<\/span>\uff09<\/span>=0<\/span>\uff0c\u5219\u4f7f\u5f97<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\uff1e<\/span>0<\/span>\u7684<\/span>x<\/span>\u53d6\u503c\u8303\u56f4\u662f<\/span><\/p>\n

7.\u00a0\u5947\u51fd\u6570<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\u662f\u5b9a\u4e49\u5728\uff08<\/span>-1<\/span>\uff0c<\/span>1<\/span>\uff09\u4e0a\u7684\u51cf\u51fd\u6570\uff0c\u4e14<\/span>f<\/span>\uff08<\/span>1-a<\/span>\uff09<\/span>+f<\/span>\uff08<\/span>2a-1<\/span>\uff09\uff1c<\/span>0<\/span>\uff0c\u6c42\u5b9e\u6570<\/span>a<\/span>\u7684\u53d6\u503c\u8303\u56f4\uff0e<\/span><\/p>\n

8.\u00a0\u5df2\u77e5\u51fd\u6570<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\u4e3a\u5947\u51fd\u6570\uff0c\u4e14\u5f53<\/span>x<\/span>\uff1e<\/span>0<\/span>\u65f6\uff0c<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09<\/span>=log<\/span>2x\uff0c\u5219\u6ee1\u8db3\u4e0d\u7b49\u5f0f<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\uff1e<\/span>0<\/span>\u7684<\/span>x<\/span>\u7684\u53d6\u503c\u8303\u56f4\u662f<\/span><\/p>\n

9.\u00a0\u5df2\u77e5\u5947\u51fd\u6570<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\u662f\u5b9a\u4e49\u5728<\/span>[-2<\/span>\uff0c<\/span>2]<\/span>\u4e0a\u589e\u51fd\u6570\uff0c\u4e14<\/span>f<\/span>\uff08<\/span>x-2<\/span>\uff09<\/span>+f<\/span>\uff08<\/span>x-1<\/span>\uff09\uff1c<\/span>0<\/span>\uff0c\u6c42<\/span>x<\/span>\u7684\u53d6\u503c\u8303\u56f4\uff0e<\/span><\/p>\n

10.\u00a0\u5b9a\u4e49\u5728\uff08<\/span>-1<\/span>\uff0c<\/span>1<\/span>\uff09\u4e0a\u7684\u5947\u51fd\u6570<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\u662f\u589e\u51fd\u6570\uff0c\u4e14<\/span>f<\/span>\uff08<\/span>a<\/span>\uff09<\/span>+f<\/span>\uff08<\/span>2a<\/span>2-1\uff09\uff1c<\/span>0<\/span>\uff0c\u5219<\/span>a<\/span>\u7684\u53d6\u503c\u8303\u56f4\u4e3a<\/span><\/p>\n

11.\u00a0\u5df2\u77e5\u5b9a\u4e49\u5728\u533a\u95f4\uff08<\/span>-1<\/span>\uff0c<\/span>1<\/span>\uff09\u5185\u7684\u5947\u51fd\u6570<\/span>f<\/span>\uff08<\/span>x<\/span>\uff09\u662f\u51cf\u51fd\u6570\uff0c\u82e5<\/span>f<\/span>\uff08<\/span>1-m<\/span>\uff09<\/span>+f<\/span>\uff08<\/span>1-m<\/span>2\uff09\uff1c0<\/span>\uff0c\u6c42<\/span>m<\/span>\u7684\u8303\u56f4<\/span><\/p>\n

\u4e0b\u8f7d\u5730\u5740\uff1a<\/strong><\/p>\n

\u6839\u636e\u51fd\u6570\u5947\u5076\u6027\u6c42\u62bd\u8c61\u51fd\u6570\u89e3\u6790\u5f0f\u7684\u53d6\u503c\u8303\u56f410\u9898\u96c6\u4e2d\u7ec3\u4e60<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

\u5185\u5bb9\u6458\u8981\uff1a \u6839\u636e\u51fd\u6570\u5947\u5076\u6027\u6c42\u62bd\u8c61\u51fd\u6570\u89e3\u6790\u5f0f\u7684\u53d6\u503c\u8303\u56f410\u9898\u96c6\u4e2d\u7ec3\u4e60 1.\u5b9a\u4e49\u57df\u4e3aR\u7684\u5947\u51fd\u6570f\uff08x\uff09\u662f\u51cf\u51fd\u6570\uff0c\u5f53 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[36],"tags":[75,72,74,73,76],"_links":{"self":[{"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/posts\/145"}],"collection":[{"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/comments?post=145"}],"version-history":[{"count":3,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/posts\/145\/revisions"}],"predecessor-version":[{"id":149,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/posts\/145\/revisions\/149"}],"wp:attachment":[{"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/media?parent=145"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/categories?post=145"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.xuehelp.cn\/index.php\/wp-json\/wp\/v2\/tags?post=145"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}