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  2. Time constant - Wikipedia

    en.wikipedia.org/wiki/Time_constant

    This behavior is referred to as a "decaying" exponential function. The time τ (tau) is referred to as the "time constant" and can be used (as in this case) to indicate how rapidly an exponential function decays. Here: t is time (generally t > 0 in control engineering) V 0 is the initial value (see "specific cases" below). Specific cases

  3. Half-life - Wikipedia

    en.wikipedia.org/wiki/Half-life

    Half-life (symbol t½) is the time required for a quantity (of substance) to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive. The term is also used more generally to characterize any type of exponential (or, rarely ...

  4. Monod equation - Wikipedia

    en.wikipedia.org/wiki/Monod_equation

    The Monod equation is a mathematical model for the growth of microorganisms. It is named for Jacques Monod (1910–1976, a French biochemist, Nobel Prize in Physiology or Medicine in 1965), who proposed using an equation of this form to relate microbial growth rates in an aqueous environment to the concentration of a limiting nutrient. [1] [2 ...

  5. Geometric progression - Wikipedia

    en.wikipedia.org/wiki/Geometric_progression

    greater than 1, there will be exponential growth towards positive or negative infinity (depending on the sign of the initial term). 1, the progression is a constant sequence. between −1 and 1 but not zero, there will be exponential decay towards zero (→ 0). −1, the absolute value of each term in the sequence is constant and terms ...

  6. List of exponential topics - Wikipedia

    en.wikipedia.org/wiki/List_of_exponential_topics

    List of exponential topics. This is a list of exponential topics, by Wikipedia page. See also list of logarithm topics . Accelerating change. Approximating natural exponents (log base e) Artin–Hasse exponential. Bacterial growth. Baker–Campbell–Hausdorff formula. Cell growth.

  7. Bacterial growth - Wikipedia

    en.wikipedia.org/wiki/Bacterial_growth

    Bacterial growth. Growth is shown as L = log (numbers) where numbers is the number of colony forming units per ml, versus T (time.) Bacterial growth is proliferation of bacterium into two daughter cells, in a process called binary fission. Providing no mutation event occurs, the resulting daughter cells are genetically identical to the original ...

  8. Euler's formula - Wikipedia

    en.wikipedia.org/wiki/Euler's_formula

    This complex exponential function is sometimes denoted cis x ("cosine plus i sine"). The formula is still valid if x is a complex number, and is also called Euler's formula in this more general case. Euler's formula is ubiquitous in mathematics, physics, chemistry, and engineering.

  9. Quadratic growth - Wikipedia

    en.wikipedia.org/wiki/Quadratic_growth

    Quadratic growth. In mathematics, a function or sequence is said to exhibit quadratic growth when its values are proportional to the square of the function argument or sequence position. "Quadratic growth" often means more generally "quadratic growth in the limit ", as the argument or sequence position goes to infinity – in big Theta notation ...