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Give out the legendary Quadratic SAT Math formula every round.

2/20 Edited to

... Read moreการทำโจทย์ Quadratic ใน SAT Math นั้นจะง่ายขึ้นมากถ้าเรารู้จักใช้สูตรและเข้าใจรูปแบบสมการพาราโบลาอย่างดี โดยปกติแล้วสมการ Quadratic จะมีสามรูปแบบหลักคือ 1. Standard Form: y = ax^2 + bx + c 2. Vertex Form: y = a(x - h)^2 + k 3. Intercept Form: y = a(x - p)(x - q) การเข้าใจความหมายและการใช้สูตรในแต่ละรูปแบบช่วยให้เราสามารถหาค่าจุดยอด (vertex), จุดตัดแกน x (x-intercepts), และจุดตัดแกน y (y-intercept) ได้อย่างรวดเร็ว ตัวอย่างเช่น สมการ y = 2x^2 + 4x - 30 ในรูปแบบ Standard Form สามารถแปลงเป็น Vertex Form ได้โดยการใช้สูตร Completing the Square เพื่อหาค่า vertex ที่ (-1, -32) ประสบการณ์ส่วนตัวที่มีสูตรเหล่านี้ช่วยมากในการทำข้อสอบ SAT คือ การนำสูตรเหล่านี้มาใช้วิเคราะห์โจทย์ ได้โดยไม่ต้องจำสูตรยาว ๆ แต่เน้นทำความเข้าใจรูปแบบและความสัมพันธ์ของแต่ละองค์ประกอบ เช่น ค่าสัมประสิทธิ์ a เป็นตัวกำหนดทิศทางของพาราโบลา ว่าจะเปิดขึ้นหรือลง นอกจากนี้ การรู้จักหา 'Axis of Symmetry' หรือแกนสมมาตรที่ x = h เป็นสิ่งสำคัญช่วยให้แก้ปัญหาต่าง ๆ ได้รวดเร็ว ไม่ว่าจะเป็นการหาพื้นที่ใต้กราฟหรือค่ามากน้อยสุดของฟังก์ชัน Quadratic เทคนิคเล็ก ๆ ที่อยากแนะนำสำหรับน้อง ๆ ที่เตรียมสอบ SAT คือ การฝึกทำโจทย์ Quadratic ทั้งในรูปแบบ Set สมการและกราฟ จะช่วยให้ไม่แค่ท่องจำสูตรแต่ยังเข้าใจภาพรวมของการแก้โจทย์ ทำให้มีความมั่นใจและลดความผิดพลาดในสนามสอบจริง

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A person takes a mirror selfie, with the title 'How I get good grades in college' overlaid, setting the theme for the post.
A screenshot displays a list of college courses with high percentage grades, including English, History, and Math, illustrating the student's current academic performance.
A black cat sits next to a laptop displaying a document, with text emphasizing the importance of finishing assignments by Wednesday and doing extra credit.
How I get good grades in college 📚
You have to stay motivated. Getting a routine down helps a lot. To start, have a clean space. Cleaning up your room makes you more likely to feel the need to be organized and work harder (at least for me 😅). I like to knock out all my assignments by Wednesday night so I have the rest of the wee
Sarah Bell

Sarah Bell

20 likes

A flat lay shows a phone displaying a 59-minute study timer with a cat illustration, a laptop, and a light-colored keyboard. The text reads 'Day 2 of sharing study tips/resources to help you become a top student SWIPE FOR MORE'.
A white card titled 'Top 2 proven strategies to help you with mathematics' details 'Interleaved Practice'. It explains mixing different problem types, with examples from Geometry (shapes, area, perimeter, volume) and Algebra (linear, quadratic, inequalities, factoring, solving, graphing).
A white card titled 'Top 2 proven strategies to help you with mathematics' details 'Concept Connections'. It explains linking new concepts to old material and real-world analogies, with examples from Algebra, Geometry, Trigonometry, Calculus, Differential Equations, and Population Dynamics.
Day 2: Top 2 Strategies for learning Math! 🧮
These strategies can significantly improve math learning and retention. They focus on active engagement with the material, which is key to mastering mathematical concepts. Keep in mind that practice is the KEY in Math! #lemon8partner #math #study #college #SATs
teal.days

teal.days

49 likes

A desk with a notebook, pen, and glass jar, against a blackboard filled with physics equations. The image is titled 'tips for studying PHYSICS from a physics PhD student'.
A close-up of a notebook with handwritten physics equations and explanatory notes, next to a pen. The text overlay advises writing in words what you are doing in math, especially for in-class examples.
An open physics textbook with highlighted sections and a red pen resting on the page. The text overlay suggests highlighting big picture points in dense physics textbooks.
study tips for 🩵physics 🩵
As a PhD student studying physics I always get questions asking for study tips for physics, so I wanted to share some of the things that work for me! ✰ when taking notes on how to do a problem, write what you are doing in words beside each step. This will help you to get an idea of the big pictu
Sarah :)

Sarah :)

587 likes

𝐌𝐚𝐭𝐡 𝐧𝐨𝐭𝐞𝐬𝐬💕
Alexandra

Alexandra

99 likes

A red spiral notebook with pink abstract patterns on a desk, with text overlayed that reads 'HOW TO PASS Physics' and 'Trust the Process'.
A notebook with handwritten physics notes on topics like power, RC circuits, capacitors, and resistors, alongside a printed formula sheet. Text overlays suggest creating and rewriting formulas.
A notebook displaying handwritten physics calculations for electric potential, with parts highlighted. Text overlays advise color-coding notes and always writing units in answers.
HOW TO PASS PHYSICS 👩🏽‍💻💡
Aside from lots of practice I promise physics is doable and this coming from someone who isn’t strong in math! A lot of memorization and understanding comes from rewriting formulas & doing examples constantly. ✨Create mini brain dumps until you can fill up a sheet of paper with everything y
Havana

Havana

300 likes

A handwritten mathematical proof demonstrating the derivation of the Second Mollweide Formula. It starts with the Law of Sines and uses trigonometric identities to arrive at (a-b)/c = sin((A-B)/2) / cos(C/2), which is highlighted in a box.
Proof of Second Mollweide Formula
#math #maths #mathematics #trig #trigonometry
cubicequation

cubicequation

8 likes

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