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The product operator for the product of a sequence is denoted by the capital Greek letter pi Π (in analogy to the use of the capital Sigma Σ as summation symbol). [1] For example, the expression ∏ i = 1 6 i 2 {\displaystyle \textstyle \prod _{i=1}^{6}i^{2}} is another way of writing 1 ⋅ 4 ⋅ 9 ⋅ 16 ⋅ 25 ⋅ 36 {\displaystyle 1 ...
An Apple II software company promised that its spreadsheet had "the power of 1-2-3". [21] Because spreadsheets use large amounts of memory, 1‐2‐3 helped popularize greater RAM capacities in PCs, and especially the advent of expanded memory, which allowed greater than 640k to be accessed.
U.S. colleges and universities maintain some of the largest endowments in the world and make up the vast majority of higher education institutions with endowments greater than $1 billion. The National Association of College and University Business Officers (NACUBO) maintains information on endowments at U.S. higher education institutions by ...
1. Means "greater than or equal to". That is, whatever A and B are, A ≥ B is equivalent to A > B or A = B. 2. Between two groups, may mean that the second one is a subgroup of the first one. 1. Means "much less than" and "much greater than".
The presence of reactive power causes the real power to be less than the apparent power, and so, the electric load has a power factor of less than 1. A negative power factor (0 to −1) can result from returning active power to the source, such as in the case of a building fitted with solar panels when surplus power is fed back into the supply.
10.3 2.1 0.4 27 Indonesia: 9.5 0.7 0.4 28 Sweden: 8.8 1.5 0.4 29 Norway: 8.7 1.6 0.4 30 Pakistan: 8.5 2.8 0.3 31 Denmark: 8.1 2.0 0.3 32 Kuwait: 7.8 4.9 0.3 33 Greece:
1.79 ± 0.06 (correct), 1.79 ± 0.96 (correct), 1.79 ± 1.96 (incorrect). The digit positions of the last significant figures in x best and σ x are the same, otherwise the consistency is lost. For example, "1.79 ± 0.067" is incorrect, as it does not make sense to have more accurate uncertainty than the best estimate.
Blair and Brown raised spending on the NHS and other public services, increasing spending from 39.9% of GDP to 48.1% in 2010–11. [139] [140] They pledged in 2001 to bring NHS spending to the levels of other European countries, and doubled spending in real terms to over £100 billion in England alone. [141]