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5 godz. temu · A complex number can be visually represented as a pair of numbers (a, b) forming a vector on a diagram called an Argand diagram, representing the complex plane. Re is the real axis, Im is the imaginary axis, and i is the "imaginary unit", that satisfies i 2 = −1.. In mathematics, a complex number is an element of a number system that extends the real numbers with a specific element denoted i ...
1 dzień temu · Pittsburgh (/ ˈ p ɪ t s b ɜːr ɡ / PITS-burg) is a city in and the county seat of Allegheny County, Pennsylvania, United States.It is the second-most populous city in Pennsylvania, after Philadelphia, and the 68th-most populous city in the U.S., with a population of 302,971 as of the 2020 census.The city is located in southwestern Pennsylvania at the confluence of the Allegheny River and ...
5 godz. temu · Some climate change effects: wildfire caused by heat and dryness, bleached coral caused by ocean acidification and heating, environmental migration caused by desertification, and coastal flooding caused by storms and sea level rise. Effects of climate change are well documented and growing for Earth's natural environment and human societies. Changes to the climate system include an overall ...
