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  2. Cube root - Wikipedia

    en.wikipedia.org/wiki/Cube_root

    The cube root is the inverse function of the cube function if considering only real numbers, but not if considering also complex numbers: although one has always () =, the cube of a nonzero number has more than one complex cube root and its principal cube root may not be the number that was cubed.

  3. nth root - Wikipedia

    en.wikipedia.org/wiki/Nth_root

    A root of degree 2 is called a square root and a root of degree 3, a cube root. Roots of higher degree are referred by using ordinal numbers, as in fourth root, twentieth root, etc. The computation of an n th root is a root extraction. For example, 3 is a square root of 9, since 3 2 = 9, and −3 is also a square root of 9, since (−3) 2 = 9.

  4. Square–cube law - Wikipedia

    en.wikipedia.org/wiki/Square–cube_law

    Steam engine: James Watt, working as an instrument maker for the University of Glasgow, was given a scale model Newcomen steam engine to put in working order. Watt recognized the problem as being related to the square–cube law, in that the surface to volume ratio of the model's cylinder was greater than that of the much larger commercial engines, leading to excessive heat loss.

  5. Cuboctahedron - Wikipedia

    en.wikipedia.org/wiki/Cuboctahedron

    Root vectors. The cuboctahedron's 12 vertices can represent the root vectors of the simple Lie group A 3. With the addition of 6 vertices of the octahedron, these vertices represent the 18 root vectors of the simple Lie group B 3. Metric properties. The area A and the volume V of the cuboctahedron of edge length a are:

  6. Cubic function - Wikipedia

    en.wikipedia.org/wiki/Cubic_function

    The sign of the expression inside the square root determines the number of critical points. If it is positive, then there are two critical points, one is a local maximum, and the other is a local minimum. If b 2 – 3ac = 0, then there is only one critical point, which is an inflection point. If b 2 – 3ac < 0, then there are no (real ...

  7. Square root of 5 - Wikipedia

    en.wikipedia.org/wiki/Square_root_of_5

    The square root of 5 is the positive real number that, when multiplied by itself, gives the prime number 5. It is more precisely called the principal square root of 5 , to distinguish it from the negative number with the same property.

  8. Mental calculation - Wikipedia

    en.wikipedia.org/wiki/Mental_calculation

    If perfect cube ends in 8, the cube root of it must end in 2. If perfect cube ends in 9, the cube root of it must end in 9. Note that every digit corresponds to itself except for 2, 3, 7 and 8, which are just subtracted from ten to obtain the corresponding digit.

  9. Square root of 3 - Wikipedia

    en.wikipedia.org/wiki/Square_root_of_3

    The square root of 3 is the positive real number that, when multiplied by itself, gives the number 3. It is denoted mathematically as √ 3 or 3 1/2. It is more precisely called the principal square root of 3, to distinguish it from the negative number with the same property. The square root of 3 is an irrational number.