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  2. ∂ - Wikipedia

    en.wikipedia.org/wiki/%E2%88%82

    The symbol was introduced originally in 1770 by Nicolas de Condorcet, who used it for a partial differential, and adopted for the partial derivative by Adrien-Marie Legendre in 1786. [3] It represents a specialized cursive type of the letter d , just as the integral sign originates as a specialized type of a long s (first used in print by ...

  3. Integral of secant cubed - Wikipedia

    en.wikipedia.org/wiki/Integral_of_secant_cubed

    Just as the integration by parts above reduced the integral of secant cubed to the integral of secant to the first power, so a similar process reduces the integral of higher odd powers of secant to lower ones. This is the secant reduction formula, which follows the syntax:

  4. Differentiation of integrals - Wikipedia

    en.wikipedia.org/wiki/Differentiation_of_integrals

    In mathematics, the problem of differentiation of integrals is that of determining under what circumstances the mean value integral of a suitable function on a small neighbourhood of a point approximates the value of the function at that point.

  5. List of mathematical constants - Wikipedia

    en.wikipedia.org/wiki/List_of_mathematical_constants

    A mathematical constant is a key number whose value is fixed by an unambiguous definition, often referred to by a symbol (e.g., an alphabet letter), or by mathematicians' names to facilitate using it across multiple mathematical problems. [1]

  6. Cosec(x) - Wikipedia

    en.wikipedia.org/?title=Cosec(x)&redirect=no

    To a related topic: This is a redirect to an article about a similar topic.. Redirects from related topics are different than redirects from related words, because a related topic is more likely to warrant a full and detailed description in the target article.

  7. Derivative - Wikipedia

    en.wikipedia.org/wiki/Derivative

    In Newton's notation or the dot notation, a dot is placed over a symbol to represent a time derivative. If y {\displaystyle y} is a function of ⁠ t {\displaystyle t} ⁠ , then the first and second derivatives can be written as y ˙ {\displaystyle {\dot {y}}} and ⁠ y ¨ {\displaystyle {\ddot {y}}} ⁠ , respectively.

  8. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    A mathematical symbol is a figure or a combination of figures that is used to represent a mathematical object, an action on mathematical objects, a relation between mathematical objects, or for structuring the other symbols that occur in a formula. As formulas are entirely constituted with symbols of various types, many symbols are needed for ...

  9. List of trigonometric identities - Wikipedia

    en.wikipedia.org/wiki/List_of_trigonometric...

    The angle difference identities for ⁡ and ⁡ can be derived from the angle sum versions by substituting for and using the facts that ⁡ = ⁡ and ⁡ = ⁡ (). They can also be derived by using a slightly modified version of the figure for the angle sum identities, both of which are shown here.