แบบฝึกทักษะเรื่องการแก้ระบบสมการที่ประกอบด้วยสมการดีกรีสองทั้งสองสมการ

จงแก้ระบบสมการต่อไปนี้
1. 3x – 2y² = 10
2x – 3y² = 0

2. x² + 2xy = 8
2x² + xy = 10

3. x² + y² = 29

x² – y² = 21
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ปริมาตรปริซึม

ปริมาตรปริซึม ตัวอย่างการคำนวณปริมาตรปริซึม ปริซึมสี่เหลี่ยมรูปหนึ่ง กว้าง 4 เซ็นติเมตร ยาว 8 เซ็นติเมตร และสูง 15 เซ็นติเมตร จงหาปริมาตรปริซึมสี่เหลี่ยมรูปนี้ วิธีทำ จากสูตรการหาปริมาตรของปริซึม = พื้นที่ฐาน x สูง จากรูป ฐานของรูปปริซึมสี่เหลี่ยมรูปนี้เป็นรูปสี่เหลี่ยมผืนผ้า กว้าง 4 cm. และยาว 8 cm. ดังนั้น พื้นที่ฐานรูปสี่เหลี่ยมผืนผ้า = ก x ย แทนค่าตามสูตรปริมาตรปริซึม = พื้นที่ฐาน x สูง = ก x ย x ส ...

อ่านเพิ่มเติม

ห้องเรียนคณิตศาสตร์ ครูวชรกมล

ค้นหาบล็อกนี้

แบบฝึกทักษะเรื่องการแก้ระบบสมการที่ประกอบด้วยสมการดีกรีสองทั้งสองสมการ

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โพสต์ยอดนิยมจากบล็อกนี้

ปริมาตรปริซึม

เลขยกกำลัง ตัวอย่าง 5 (math logarithm)

สถิติ (ค่าเฉลี่ยเลขคณิต) ตัวอย่าง 1