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Search results for "m.d.mikhailov"

Rationalize

Added Aug 19, 2010 by m.d.mikhailov in Mathematics

Converts an real (floating-point) number to a nearby rational number.

Rational approximations to within a given tol

Added Aug 20, 2010 by m.d.mikhailov in Mathematics

Find rational approximations to within a given tolerance:


Shortest toor through 2D/3D points or strings

Added Aug 26, 2010 by m.d.mikhailov in Mathematics

The Mathematica function FindShortestTour is used to find an ordering of elements (points in 2D/3D space or strings) that minimizes the total distance on a tour that visits all the elements once.

Function of uncertain number by V. Y. Aibe an

Added Aug 28, 2010 by m.d.mikhailov in Mathematics

Calculate a specified function of x at the uncertain number x = v +- u. The value v and the uncertainty u could be numbers or symbols.


Wolfram|Alpha: Enter what you want

Added Sep 6, 2010 by m.d.mikhailov in Web & Computer Systems

An existing simple widget is extended to write statements in consecutive input fields.

Many series and parallel resistence

Added Sep 7, 2010 by m.d.mikhailov in Physics

Calculate equivalent resistance of many resistors in same units connected in parallel or series circuits. Instead of numerical data you could use up to 3 symbols, let say R1, R2, R3.


Steady state conduction in plate

Added Sep 9, 2010 by m.d.mikhailov in Engineering

Solve Q = k (T0 - T1) A/L for one of the parameters, when the rest are numbers. Elective units has to be added as in Mikhailov & Ozisik, Heat Transfer Solver, Prentice Hall, 1991

Roots of x tg x = (Bi K - x^2)/(Bi + K)

Added Sep 18, 2010 by m.d.mikhailov in Engineering

Find the first roots of transcendental equation tabulated in the booklet M. D. Mikhailov, Nonstationary Temperature Fields in Skin, Energia, Moscow, 1967


Roots of x ctg x = (x^2-Bi0*Bi1)/(Bi0+Bi1)

Added Sep 18, 2010 by m.d.mikhailov in Engineering

Find first roots of transcendental equation tabulated in the booklet M. D. Mikhailov, Non-stationary Temperature Fields in Skin, Energia, Moscow, 1967

Linear Solve

Added Sep 18, 2010 by m.d.mikhailov in Mathematics

This widget solves matrix equation m.x=b by using LinearSolve function. The published widgets solves systems of 2 or 3 equations.


NMaximize

Added Sep 21, 2010 by m.d.mikhailov in Mathematics

Solve many documented examples for the Mathematica functions NMaximize and NMinimize, but usage of options is impossible.


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