成比例√ (square) root 平方根∵ since; because 因为∴ hence 所以∷ equals, as (proportion) 等于,成比例∠ angle 角⌒ semicircle 半圆⊙ circle圆你知道这些标点符号用英语怎么说吗?(二)○ circumference 圆周π pi 圆周率△ triangle 三角形⊥ perpendicular to 垂直于∪ union of 并,合集∩ intersection...
A positive number x is multiplied by 2, and this product is then divided by 3. If the positive square root of the result of these two operations equals x, what is the value of x? 选项: A、 B、 C、 D、 E、 答案: D Problem Solving 提问 最新 问个问题 我想问: 提交 最热...
It means you have sixty nine units each consisting of one unit. It means you just passed sixty eight and have one more to go to reach seventy. It means that you have reached the age where you are no longer asking questions you already know the answer to.
and this equals 1, which explains the ordinary decimal expansion of \(1/7\). But that means also that you get …999 if you multiply \(\overline{285714}\) by 7. And as we believe in \(\overleftarrow{9}=-1\), we obtain that \(-1/7\) has the same block of digits repeatedly...
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!= Not equals <> Not equals < Less than <= Less than or equal to > Greater than >= Greater than or equal to && Boolean and || Boolean or *Boolean operators result always in a BigDecimal value of 1 or 0 (zero). Any non-zero value is treated as a _true_ value. Boolean _not_...
Page 77: “negative times positive equals positive” should be “negative times positive equals negative”. Change “we call a negative integer“, to “we call a positive integer and a negative integer“. Page 89: In the first paragraph, insert “Note that when , the definition of provided...
g By the relation: wavelength times frequency equals the speed of light. 12 Movement excursions less than a frequency’s wavelength alter the phase of a target echo waveform as compared to the transmitted frequency. Since waveform phase relates to distance in wavelength, this allows radar ...
This is a simple exercise in least-square estimation. The result obviously is that Ÿ equals the arithmetic mean of the Yi.8 Under the assumptions specified, this estimator has the statistically desirable best-linear- unbiased property.9 As Solomou and Weale (1996, p. 101) state: "If the...
When this is translated to Euclidean relativity with metric (++++), [itex]ds^2[/itex] is not zero (it then equals [itex](cdt)^2[/itex] for the photon which >0) but the displacement in the [itex]\tau[/itex] dimension is zero. So strictly spoken one could...