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Layers of Pascal's pyramid derived from coefficients in an upside-down ternary plot of the terms in the expansions of the powers of a trinomial – the number of terms is clearly a triangular number. In mathematics, a trinomial expansion is the expansion of a power of a sum of three terms into monomials. The expansion is given by
For instance, the polynomial x 2 + 3x + 2 is an example of this type of trinomial with n = 1. The solution a 1 = −2 and a 2 = −1 of the above system gives the trinomial factorization: x 2 + 3x + 2 = (x + a 1)(x + a 2) = (x + 2)(x + 1). The same result can be provided by Ruffini's rule, but with a more complex and time-consuming process.
Infection rates dropped and stabilised throughout 2022 and 2023, leading to the end of COVID-19's classification as a severe transmissible disease in June 2023. [22] Although the pandemic has heavily disrupted the country's economy, [23] Vietnam's GDP growth rate has remained one of the highest in Asia-Pacific, at 2.91% in 2020. Due to the more ...
2020-01-23: 2 (n.a.): 0 (n.a.): ⋮: 2 (=): 0 (n.a.): 2020-01-28: 2 (=): 0 (n.a.): ⋮: 2 (=): 0 (n.a.): 2020-01-31: 5 (+3): 0 (n.a.): 2020-02-01: 6 (+1): 0 (n.a ...
This is a general overview and status of places affected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the virus which causes coronavirus disease 2019 and is responsible for the COVID-19 pandemic. The first human cases of COVID-19 were identified in Wuhan, the capital of the province of Hubei in China in December 2019. It ...
This template is used to provide data for COVID-19 pandemic in Vietnam. Before making major changes, use the sandbox linked below and discuss them on the template's talk page. Updating the data are not considered a major change, but they need to be backed by reliable sources .
The COVID-19 vaccines are widely credited for their role in reducing the severity and death caused by COVID-19. [ 128 ] [ 129 ] As of March 2023, more than 5.5 billion people had received one or more doses [ 130 ] (11.8 billion in total) in over 197 countries.
The COVID-19 vaccination in Vietnam is an ongoing immunization campaign against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), in response to the ongoing pandemic in the country.