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The reciprocal function: y = 1/x.For every x except 0, y represents its multiplicative inverse. The graph forms a rectangular hyperbola.. In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x −1, is a number which when multiplied by x yields the multiplicative identity, 1.
If y is a variable that depends on x, then , read as "d y over d x" (commonly shortened to "d y d x"), is the derivative of y with respect to x. 2. If f is a function of a single variable x , then d f d x {\displaystyle \textstyle {\frac {\mathrm {d} f}{\mathrm {d} x}}} is the derivative of f , and d f d x ( a ) {\displaystyle \textstyle {\frac ...
Thus, given a graph G = (V, E), a tree decomposition is a pair (X, T), where X = {X 1, …, X n} is a family of subsets (sometimes called bags) of V, and T is a tree whose nodes are the subsets X i, satisfying the following properties: [3] The union of all sets X i equals V. That is, each graph vertex is associated with at least one tree node.
10.7 2.9 0.4 26 Iran: 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:
For example, if the load power factor were as low as 0.7, the apparent power would be 1.4 times the real power used by the load. Line current in the circuit would also be 1.4 times the current required at 1.0 power factor, so the losses in the circuit would be doubled (since they are proportional to the square of the current).
The number π (/ p aɪ / ⓘ; spelled out as "pi") is a mathematical constant, approximately equal to 3.14159, that is the ratio of a circle's circumference to its diameter.It appears in many formulae across mathematics and physics, and some of these formulae are commonly used for defining π, to avoid relying on the definition of the length of a curve.
In the following table, for each country/territory, CIA figures shows revenues and expenditures calculated on an exchange rate basis, i.e., not in purchasing power parity (PPP) terms. [12] Sorting is alphabetical by country code, according to ISO 3166-1 alpha-3 .
Of the additional 1.9 billion people projected between 2020 and 2050, 1.2 billion will be added in Africa, 0.7 billion in Asia and zero in the rest of the world. Africa's share of global population is projected to grow from 17% in 2020 to 25% in 2050 and 38% by 2100, while the share of Asia will fall from 60% in 2020 to 55% in 2050 and 45% in 2100.