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Chinese math terms conquer CSCA.

2025/11/7 Edited to

... Read moreถ้าเป้าหมายคืออ่าน “ข้อสอบ CSCA” ให้รู้เรื่องไว ๆ เราว่าการจำศัพท์คณิตจีนเป็นหมวดช่วยมาก โดยเฉพาะหมวด “基础与集合 (jíchu yǔ jíhé) = พื้นฐานและเซต” เพราะมักเป็นคำสั่งโจทย์/หัวข้อที่โผล่บ่อย แล้วค่อยต่อยอดไปสถิติและพิกัดคาร์ทีเซียน 1) ศัพท์คณิตจีนที่ควรรู้ (พื้นฐาน + เซต) - 集合 (jíhé) = เซต - 元素 (yuánsù) = สมาชิก/ธาตุของเซต - 子集 (zǐjí) = สับเซต - 空集 (kōngjí) = เซตว่าง - 并集 (bìngjí) = ยูเนียน - 交集 (jiāojí) = อินเตอร์เซกชัน - 补集 (bǔjí) = ส่วนเติมเต็ม - 属于 (shǔyú) = เป็นสมาชิกของ (∈) - 包含 (bāohán) = ประกอบด้วย/มีอยู่ใน เวลาอ่านโจทย์ ถ้าเห็นคำอย่าง 求…的交集 = “จงหาอินเตอร์เซกชันของ…” จะเดาแนวได้ทันที 2) สถิติ ภาษาจีน (统计) ที่ออกบ่อย คำว่า “สถิติ” ในจีนใช้ 统计 (tǒngjì) และในโจทย์มักจะพ่วงคำพื้นฐานเหล่านี้ - 数据 (shùjù) = ข้อมูล - 平均数/平均值 (píngjūnshù / píngjūnzhí) = ค่าเฉลี่ย - 中位数 (zhōngwèishù) = มัธยฐาน - 众数 (zhòngshù) = ฐานนิยม - 方差 (fāngchà) = ความแปรปรวน - 标准差 (biāozhǔnchā) = ส่วนเบี่ยงเบนมาตรฐาน ทริคส่วนตัวคือจำคู่คำไทย-จีนแบบ “เห็นปุ๊บรู้ปั๊บ” เพราะข้อสอบชอบถามทั้งศัพท์และความหมายประกอบการคำนวณ 3) Cartesian คืออะไร (笛卡尔) Cartesian ในคณิตจีนมักเจอคำว่า 笛卡尔 (díkǎ’ěr) เช่น - 笛卡尔坐标系 = ระบบพิกัดคาร์ทีเซียน - 直角坐标系 = ระบบพิกัดฉาก (มักใช้แทนกันในบริบทกราฟแกน x-y) - 坐标 (zuòbiāo) = พิกัด - 横轴/ x轴 (héngzhóu / x zhóu) = แกนนอน (แกน x) - 纵轴/ y轴 (zòngzhóu / y zhóu) = แกนตั้ง (แกน y) ถ้าโจทย์ถาม “Cartesian product” จะเป็น 笛卡尔积 (díkǎ’ěr jī) = ผลคูณคาร์ทีเซียนของเซต (เช่น A×B) 4) วิธีใช้ศัพท์คณิตจีนให้ช่วยทำข้อสอบ CSCA ได้จริง - ก่อนทำโจทย์ให้สแกน “คำสั่ง” ก่อน: 求 (หา), 证明 (พิสูจน์), 设 (กำหนดให้), 若/如果 (ถ้า) - ทำแฟลชการ์ดเป็นหมวด: 基础与集合 → 统计 → 坐标/笛卡尔 - เวลาจำ ให้จำพร้อมสัญลักษณ์: 属于(∈), 子集(⊂), 并集(∪), 交集(∩) ใครกำลังเริ่มจากศูนย์ แนะนำเริ่มที่หมวด 基础与集合 ให้คล่องก่อน แล้วค่อยไล่ไปสถิติ (统计) และบทพิกัดคาร์ทีเซียน (笛卡尔坐标系) จะอ่านโจทย์ CSCA ได้เร็วขึ้นแบบรู้สึกได้เลย

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