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  2. Symbolab - Wikipedia

    en.wikipedia.org/wiki/Symbolab

    Symbolab is an answer engine [1] that provides step-by-step solutions to mathematical problems in a range of subjects. [2] It was originally developed by Israeli start-up company EqsQuest Ltd., under whom it was released for public use in 2011. In 2020, the company was acquired by American educational technology website Course Hero. [3] [4]

  3. Wikipedia : Wikipedia Signpost/2025-01-15/Technology report

    en.wikipedia.org/wiki/Wikipedia:Wikipedia...

    The first non-medical calculator thing we tried was inspired by Dimitris131. They had been experimenting with interactive math proofs, where the user can go through the proof step-by-step with a different illustration for each step . They had an off-wiki prototype that we were able to bring on-wiki via the calculator template.

  4. Costate equation - Wikipedia

    en.wikipedia.org/wiki/Costate_equation

    The costate variables () can be interpreted as Lagrange multipliers associated with the state equations. The state equations represent constraints of the minimization problem, and the costate variables represent the marginal cost of violating those constraints; in economic terms the costate variables are the shadow prices.

  5. List of trigonometric identities - Wikipedia

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

    This allows the two congruent purple-outline triangles and to be constructed, each with hypotenuse ⁡ and angle at their base. The sum of the heights of the red and blue triangles is sin ⁡ θ + sin ⁡ φ {\displaystyle \sin \theta +\sin \varphi } , and this is equal to twice the height of one purple triangle, i.e. 2 sin ⁡ p cos ⁡ q ...

  6. Calculator input methods - Wikipedia

    en.wikipedia.org/wiki/Calculator_input_methods

    On a single-step or immediate-execution calculator, the user presses a key for each operation, calculating all the intermediate results, before the final value is shown. [ 1 ] [ 2 ] [ 3 ] On an expression or formula calculator , one types in an expression and then presses a key, such as "=" or "Enter", to evaluate the expression.

  7. Windows Calculator - Wikipedia

    en.wikipedia.org/wiki/Windows_Calculator

    A simple arithmetic calculator was first included with Windows 1.0. [6]In Windows 3.0, a scientific mode was added, which included exponents and roots, logarithms, factorial-based functions, trigonometry (supports radian, degree and gradians angles), base conversions (2, 8, 10, 16), logic operations, statistical functions such as single variable statistics and linear regression.

  8. Do Baking Supplies Expire? From Flour to Salt, Here's When ...

    www.aol.com/baking-supplies-expire-flour-salt...

    "Spices and herbs do go bad around one to two years," Bapton says. But the type matters. "Ground spices have about half the shelf life of whole spices. For optimal baking, open the containers to ...

  9. Law of cotangents - Wikipedia

    en.wikipedia.org/wiki/Law_of_cotangents

    Using the usual notations for a triangle (see the figure at the upper right), where a, b, c are the lengths of the three sides, A, B, C are the vertices opposite those three respective sides, α, β, γ are the corresponding angles at those vertices, s is the semiperimeter, that is, s = ⁠ a + b + c / 2 ⁠, and r is the radius of the inscribed circle, the law of cotangents states that