低收入的城乡地区的教师没有参加过数学竞赛,他们可能不知道有像Math Counts 这样学习高数的机会。
Teachers in low-income urban and rural areas with no history of participating in math competitions may not know about advanced-math opportunities like Math Counts.
在一些数学练习中,字母“x”通常代表一个未知数。
The letter "x" often represents an unknown number in some Math exercises.
研究者们希望他们的研究结果能成为一个跨越点,帮助人们更深入地调查了解能否通过训练来提高数觉从而提高数学成绩。
The researchers hope their findings will be a jumping point for a deeper look into whether training can help kids improve their number sense, and hence their math performance.
早前的研究对象是年龄较大儿童的数学能力与数觉的关系,但里柏图斯的研究团队对象则是200名平均年龄仅4岁的低龄儿童。
Past research has associated number sense with math ability in older children, but the Libertus and her team's study involved 200 younger children with an average age of 4.
数学研究数和空间的抽象对象。
Mathematics is concerned with the abstractions of time and space.
因此,他决定拓展数学的疆界,发明一套新的系统--他称之为“ 流数术 (fluxions)”。
He therefore decided that the answer was to extend the boundaries of maths by inventing a system that he called “fluxions”.
第二种方法是使用之前开发的IPTi随机数学模型预测,在不同疾病流行条件下,实施IPTi可避免的患病数。
Second, a previously developed stochastic mathematical model of IPTi was used to predict the number of cases likely to be averted by implementing IPTi under different epidemiological conditions.
记住,整形数运算要比浮点数运算快得多,因为处理器可以直接进行整型数运算,浮点数运算需要依赖于外部的浮点数处理器或者浮点数数学库。
Remember, integer arithmetic is much faster than floating-point arithmetic, as it can usually be done directly by the processor, rather than relying on external FPUs or floating point math libraries.
不过,他应付有方,已经研究出一套数学模型来解释第二位数的分布,将统计上的疑异置于更充裕的分析基础上。
However, he has managed to develop a mathematical model that explains the distribution of the second digits, putting what might appear to be a statistical oddity on a more solid footing.
我将用2003年工资数率,和2009年的比,得出年增长率,这是很简单的数学运算,很容易被反驳。
I'll take 2003 wage rate, use 2009 projections to get an annual growth rate, this is very simple math, easily argue against.
在本例中,我们用一些数学函数创建0到100之间的一个随机数。
In this case, you're using some math functions to create a random number from 0 to 100.
微粒去除是通过将系统的总线性英尺数算入适当的数学方程序中来完成的。
Particle removal is achieved by including the total linear feet of the system into the appropriate mathematical equation.
没有高深的数学知识的高中生或者大学生们,要注意啦!微软的Live搜索可以帮你解答一些含有未知数的数学方程了。
Students in high school, or college kids without embedded math knowledge, take note: Microsoft's Live Search can solve math equations with variables.
但约翰稍后又说,“通过140个字符发现一个陌生人对你的看法,这有点像是一个含有未知数x的数学方程式。
He does, however, make a pretty decent point, “Finding out in 140 characters what a stranger has to say about you is like a mathematical equation without an established value of ‘x’.
有些示例展示了如何将Workers用于执行密集的数学计算,比如计算1万位数的圆周率。
Some Worker examples show Workers being used to perform intense mathematical computations, like calculating ten-thousand digits of PI.
对中学数学教学中数形结合思想方法的反思与展望。
For middle school mathematics teaching method combining the number of reflection and prospect.
想一想自己擅长什么。你擅长数学吗,英语,垒球,和小孩子玩耍,数羊?
Think about what you are good at. Are you good at mathematics? English? Baseball? Playing with little kids? Counting sheep?
同样的,对数,根,超越数,和其他到处出现的基本数学原理。
Same with logarithms, roots, transcendentals, and other fundamental mathematical representations that appear nearly everywhere.
有时我会花整个周末来读数学书,有时会数周都不再思考它。
Sometimes I'll spend a whole weekend reading a math book, and sometimes I'll go for weeks without thinking about it even once.
有时我会花整个周末来读数学书,有时会数周都不再思索她。
Sometimes I'll spend a whole weekend reading a math book, and sometimes I'll go for weeks without thinking about it even once.
通过对四元数和四元数矩阵理论的历史与现状的考查,我们发现,从1843年英国数学家W 。
Through the research on the history and actuality of the quaternion and the quaternion matrix theory , we have found that , from 1843, when English mathematician W.
所以我们将有益于大多几何数学概念应付我们的颜色,例如准则、数积、投射、自转或者距离。
Therefore we will benefit of most of the geometric mathematical concepts to deal with our colors, such as norms, scalar product, projection, rotation or distance.
采用四元数描述刚体姿态,建立了刚体姿态运动的数学模型。
Quaternion is used to describe the orientation of a rigid body, and attitude motion is modelled.
毕达哥拉斯是个大胆的思想家,是数学学科的奠基人,他认为“数”是万物之源。
Pythagoras was a bold thinker who had the idea that all things were Numbers. He was the founder of scientific mathematics.
但由于采用传统器件设计转换速度不高,为此,在十进制数转化为二进制数的数学原理基础上提出一种采用新型器件的A DC电路设计方法。
In the paper, a design method of ADC with new devices is presented based on the mathematical principle of converting decimal digit to binary digit .
但由于采用传统器件设计转换速度不高,为此,在十进制数转化为二进制数的数学原理基础上提出一种采用新型器件的A DC电路设计方法。
In the paper, a design method of ADC with new devices is presented based on the mathematical principle of converting decimal digit to binary digit .
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