{"id":918,"date":"2024-03-19T23:19:24","date_gmt":"2024-03-19T15:19:24","guid":{"rendered":"http:\/\/ceshi.cn\/?p=918"},"modified":"2024-03-19T23:19:24","modified_gmt":"2024-03-19T15:19:24","slug":"xititigao4-3","status":"publish","type":"post","link":"http:\/\/jhwk.online\/?p=918","title":{"rendered":"\u5706\u9525\u66f2\u7ebf\u7efc\u5408\u9898-\u57fa\u7840\u7bc7"},"content":{"rendered":"\n<div class=\"wp-block-stackable-spacer stk-block-spacer stk--no-padding stk-block stk-ede5a0c\" data-block-id=\"ede5a0c\"><\/div>\n\n\n\n<div class=\"wp-block-katex-display-block katex-eq\" data-katex-display=\"true\"><pre>1.\u692d\u5706C:\\frac{x^2}{a^2}+\\frac{y^2}{b^2}=1(a&gt;b&gt;0),\ud835\udc39\u4e3a\u5de6\u7126\u70b9\uff0c\u4e0a\u9876\u70b9\ud835\udc43\u5230\ud835\udc39\u7684\u8ddd\u79bb\u4e3a2\uff0c\u4e14\u79bb\u5fc3\u7387~~~~\\\\\u4e3a\\frac{\\sqrt{3}}{2}.\n(1)\u6c42\u692d\u5706\ud835\udc36\u7684\u6807\u51c6\u65b9\u7a0b\uff1b\n(2)\u8bbe\u659c\u7387\u4e3a\ud835\udc58\u7684\u52a8\u76f4\u7ebf\ud835\udc59\u4e0e\u692d\u5706\ud835\udc36\u4ea4\u4e8e\ud835\udc40,\ud835\udc41\u4e24\u70b9\uff0c\u4e14~~~\\\\|\ud835\udc43\ud835\udc40|=|\ud835\udc43\ud835\udc41|,\u6c42\ud835\udc58\u7684\u53d6\u503c\u8303\u56f4\uff0e~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<\/pre><\/div>\n\n\n\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-587bb37\" data-block-id=\"587bb37\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-dd408ef\" data-block-id=\"dd408ef\"><style>.stk-dd408ef .stk-button{background:var(--theme-palette-color-1,#EC6A2B) !important;border-top-left-radius:11px !important;border-top-right-radius:11px !important;border-bottom-right-radius:11px !important;border-bottom-left-radius:11px !important}.stk-dd408ef .stk-button:before{box-shadow:0 0 0 2px rgba(120,120,120,0.1) !important}<\/style><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"\/fabu\/%E5%9C%86%E9%94%A5%E6%9B%B2%E7%BA%BF%E7%BB%BC%E5%90%88%E9%A2%981%EF%BC%88%E5%9F%BA%E7%A1%80%EF%BC%89\/HTML5\/practice.html\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"stk-button__inner-text\">\u89c2\u770b\u5fae\u8bfe<\/span><\/a><\/div>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-katex-display-block katex-eq\" data-katex-display=\"true\"><pre>2.A,B,C \u662f\u6211\u65b9\u4e09\u4e2a\u70ae\u5175\u9635\u5730,A\u5728 B \u6b63\u4e1c 6km\uff0cC \u5728 B \u5317\u504f\u897f 30^0,\u76f8\u8ddd 4 km\uff0cP\u4e3a~~~~~~~~\\\\\u70ae\u5175\u9635\u5730.\n\u67d0\u65f6\u523b A \u5904\u53d1\u73b0\u654c\u70ae\u9635\u5730\u7684\u67d0\u79cd\u4fe1\u53f7\uff0c\u7531\u4e8e BC\u4e24\u5730\u6bd4 A\u8ddd P \u5730\u8fdc\uff0c\u56e0\u6b64 4 s~~~~\\\\\u540e ,BC \u624d\u540c\u65f6\n\u53d1\u73b0\u8fd9\u4e00\u4fe1\u53f7\uff0c\u6b64\u4fe1\u53f7\u7684\u4f20\u64ad\u901f\u5ea6\u4e3a 1&nbsp;km\/s,\u82e5 A\u70ae\u51fbP\u5730\uff0c\u6c42\u70ae\u51fb\u7684~~~~\\\\\u65b9\u5411\u89d2\u3002~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\\hspace{1.8cm}<\/pre><\/div>\n\n\n\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-f9c7a9c\" data-block-id=\"f9c7a9c\"><div class=\"stk-row stk-inner-blocks has-text-align-left stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-2b7c104\" data-block-id=\"2b7c104\"><style>.stk-2b7c104 .stk-button{min-height:0px !important;background:var(--theme-palette-color-1,#EC6A2B) !important;border-top-left-radius:9px !important;border-top-right-radius:9px !important;border-bottom-right-radius:9px !important;border-bottom-left-radius:9px !important}<\/style><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"\/fabu\/%E5%88%A9%E7%94%A8%E5%8F%8C%E6%9B%B2%E7%BA%BF%E6%96%B9%E7%A8%8B%E8%A7%A3%E5%86%B3%E5%AE%9E%E9%99%85%E9%97%AE%E9%A2%981\/HTML5\/practice.html\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"stk-button__inner-text\">\u89c2\u770b\u8bb2\u8bc4<\/span><\/a><\/div>\n<\/div><\/div>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity is-style-wide\"\/>\n\n\n\n<div class=\"wp-block-katex-display-block katex-eq\" data-katex-display=\"true\"><pre>\u5df2\u77e5\u692d\u5706\ud835\udc36:\\frac{\ud835\udc65_2}{\ud835\udc4e_2}+\\frac{\ud835\udc66_2}{\ud835\udc4f_2}=1(\ud835\udc4e&gt;\ud835\udc4f&gt;0)\u7684\u77ed\u8f74\u957f\u4e3a2\\sqrt{3}\uff0c\u5de6\u9876\u70b9\ud835\udc34\u5230\u53f3\u7126\u70b9\ud835\udc39\u7684\u8ddd\u79bb\u4e3a3.\\\\\n(1)\u6c42\u692d\u5706\ud835\udc36\u7684\u65b9\u7a0b;\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\\\\n(2)\u82e5\u76f4\u7ebf\ud835\udc59\u4e0e\u692d\u5706\ud835\udc36\u4ea4\u4e8e\u4e0d\u540c\u7684\u4e24\u70b9\ud835\udc40,\ud835\udc41(\u4e0d\u540c\u4e8e\ud835\udc34)\uff0c\u4e14\u76f4\u7ebf\ud835\udc34\ud835\udc40\u548c\ud835\udc34\ud835\udc41\u7684\u659c\u7387\u4e4b\u79ef\u4e0e\\\\\u692d\u5706\u7684\u79bb\u5fc3\u7387\u4e92\u4e3a\u76f8\u53cd\u6570\uff0c\u6c42\u8bc1\uff1a\u76f4\u7ebf\ud835\udc59\u8fc7\u5b9a\u70b9.\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad\\quad<\/pre><\/div>\n\n\n\n<div class=\"wp-block-stackable-button-group stk-block-button-group stk-block stk-3bed69f\" data-block-id=\"3bed69f\"><div class=\"stk-row stk-inner-blocks stk-block-content stk-button-group\">\n<div class=\"wp-block-stackable-button stk-block-button stk-block stk-b91a1e2\" data-block-id=\"b91a1e2\"><style>.stk-b91a1e2 .stk-button{background:var(--theme-palette-color-1,#EC6A2B) !important;border-top-left-radius:11px !important;border-top-right-radius:11px !important;border-bottom-right-radius:11px !important;border-bottom-left-radius:11px !important}.stk-b91a1e2 .stk-button:before{box-shadow:0 0 0 2px rgba(120,120,120,0.1) !important}<\/style><a class=\"stk-link stk-button stk--hover-effect-darken\" href=\"\/fabu\/%E5%9C%86%E9%94%A5%E6%9B%B2%E7%BA%BF%E7%BB%BC%E5%90%88%E9%A2%983%EF%BC%88%E5%9F%BA%E7%A1%80%EF%BC%89\/HTML5\/practice.html\" target=\"_blank\" rel=\"noreferrer noopener\"><span class=\"stk-button__inner-text\">\u89c2\u770b\u5fae\u8bfe<\/span><\/a><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-28f84493 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\"><\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\u89c2\u770b\u5fae\u8bfe \u89c2\u770b\u8bb2\u8bc4 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