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  2. Crossed ladders problem - Wikipedia

    en.wikipedia.org/wiki/Crossed_ladders_problem

    The short ladder in the complex solution in the 3, 2, 1 case appears to be tilted at 45 degrees, but actually slightly less with a tangent of 0.993. Other combinations of ladder lengths and crossover height have comparable complex solutions. With combination 105, 87, 35 the short ladder tangent is approximately 0.75.

  3. Problem structuring methods - Wikipedia

    en.wikipedia.org/wiki/Problem_structuring_methods

    An early literature review of problem structuring proposed grouping the texts reviewed into "four streams of thought" that describe some major differences between methods: [21] the checklist stream, which is step-by-step technical problem solving (not problem structuring as it came to be defined in PSMs, so this stream does not apply to PSMs),

  4. Level ancestor problem - Wikipedia

    en.wikipedia.org/wiki/Level_ancestor_problem

    The reason for this is the fact that paths are easier to be queried when it comes to level ancestor queries. Consider a path P consisting of n nodes rooted at a node r. We can store the path into an array of size n called Ladder and we can quickly answer a level ancestor query of LA(v, d) by returning Ladder[d] if depth(v)≤d. This will take O ...

  5. Inverse dynamics - Wikipedia

    en.wikipedia.org/wiki/Inverse_dynamics

    Inverse dynamics is an inverse problem.It commonly refers to either inverse rigid body dynamics or inverse structural dynamics.Inverse rigid-body dynamics is a method for computing forces and/or moments of force (torques) based on the kinematics (motion) of a body and the body's inertial properties (mass and moment of inertia).

  6. TRIZ - Wikipedia

    en.wikipedia.org/wiki/TRIZ

    TRIZ flowchart Contradiction matrix 40 principles of invention, principles based on TRIZ. One tool which evolved as an extension of TRIZ was a contradiction matrix. [14] The ideal final result (IFR) is the ultimate solution of a problem when the desired result is achieved by itself.

  7. Systematic inventive thinking - Wikipedia

    en.wikipedia.org/wiki/Systematic_inventive_thinking

    Systematic inventive thinking (SIT) is a thinking method developed in Israel in the mid-1990s.Derived from Genrich Altshuller's TRIZ engineering discipline, SIT is a practical approach to creativity, innovation and problem solving, which has become a well known methodology for innovation.

  8. Problem solving - Wikipedia

    en.wikipedia.org/wiki/Problem_solving

    Problem solving is the process of achieving a goal by overcoming obstacles, a frequent part of most activities. Problems in need of solutions range from simple personal tasks (e.g. how to turn on an appliance) to complex issues in business and technical fields.

  9. Trial and error - Wikipedia

    en.wikipedia.org/wiki/Trial_and_error

    This approach can be seen as one of the two basic approaches to problem-solving, contrasted with an approach using insight and theory. However, there are intermediate methods that, for example, use theory to guide the method, an approach known as guided empiricism .