根号是一个数学符号。根号是用来表示对一个数或一个代数式进行开方运算的符号。若aⁿ=b,那么a是b开n次方的n次方根或a是b的1/n次方。开n次方手写体和印刷体用表示,被开方的数或代数式写在符号左方√ ̄的右边和符号上方一横部分的下方共同包围的区域中,而且不能出界。
要是我选择一个60度的角,这些数就会是二分之一和二分之根号三。
If I pick an angle of 60 degrees, these are some numbers like half and root 3 over 2.
现在我们有两个候选答案,两个根号,和2个负根号。
Now we have two candidate points which are these two points, 3 root three, root three or negative root 3 three, negative root three. OK.
这是世界上最后幸存的木制捕鲸船查尔斯W ·摩根号。
The world's last surviving wooden whaling vessel, the Charles W. Morgan, is pictured on a railway at Fairhaven, Mass., in 1916.
So, once we figure out what our probability of backscattering is, we'll just raise that to the 1/2, and we'll multiply that by 12 . 20 centimeters.
所以一旦我们,知道了散射概率,我们开根号。
If I pick an angle of 60 degrees, these are some numbers like half and root 3 over 2.
要是我选择一个 60°的角,上面的系数就会是二分之一和二分之根号三
If you had one negative number in it, then the product would be a negative number and, if you took a root of that, then you might get an imaginary number.
如果这当中有一个负数,乘积就会变成负的,如果你对一个负数开根号,你就会得到一个虚数
应用推荐