square root
US /skwɛr rut/
・UK /skwɛə ru:t/
A2 初級
n.名詞平方根
影片字幕
歐拉公式與群論入門！ (Euler's formula with introductory group theory)
- If you want, you could think of this as broken down as a rotation by 30 degrees, followed by a stretch by a factor of square root of 5.
如果你願意，可以把它理解為旋轉 30 度，然後拉伸 5 的平方根。
- If you want, you could think of this as broken down as a rotation by 30 degrees, followed by a stretch by a factor of square root of 5.
數學家在描述這樣的性質時會說，這個函數保留了組的結構，也就是說，組內的算術運算賦予了組的結構，而像這樣的指數函數很好地利用了這種算術運算。
微分方程總覽！ (Overview of Differential Equations)
- Say F of T equals E to the T or E to the Omega T or E to the I omega T that I is the square root of minus 1.
說 F of T 等於 E 的 T 次方，或是 E 的 Omega T 次方，或是 E 的 i Omega T 次方，這裡的 i 是負一的平方根。
- Exponentials, say f of t equal e to the t, or e to the omega t, or e to the i omega t, that i is the square root of minus 1.
然後當我們遇到完全非線性函數，或是係數會變動時，我們就會用數值方法。
協作學習，打造更深刻的理解！ (Collaborative Learning Builds Deeper Understanding)
- About the square root of B squared plus A squared?
使是學生培養了一定的應變能力'。
- >>Boy: I got the square root of B squared plus A squared.
>>男孩：我得到了B的平方根加A的平方。
3秒算出任何數字的平方根！數學奇招太神啦！ (Square Root of Any Number in 3 seconds - Crazy Math Trick)
- What if I ask you to quickly tell me in five seconds what will be the value of square root of 81 without using a calculator?
如果我請你在五秒內，不用計算機，快速告訴我 81 的平方根是多少？
- What if I ask you to quickly tell me in 5 seconds what will be the value of square root of 81 without using a calculator, you will laugh at me and say, "It doesn't require a calculator or even 5 seconds.
如果我請你在五秒內，不用計算機，快速告訴我 81 的平方根是多少？
