- Resources, Tools and Basic Information for Engineering and Design of Technical Applications!
How to solve a quadratic equation.
The quadratic equation can be expressed as
a x 2 + b x + c = 0 (1)
which can be solved for the two alternatives of x as
x 1,2 = (-b ± (b 2 - 4 a c) 1/2) / (2 a) (2) Example - Solving Quadratic Equation
a = 1
b = 6
c = 5
then the two alternatives for
x can be calculated as
x 1 = (-6 + (6 2 - 4 1 5) 1/2) / (2 1)
x 2 = (-6 - (6 2 - 4 1 5) 1/2) / (2 1)
Mathematical rules and laws - numbers, areas, volumes, exponents, trigonometric functions and more.
Principal algebraic expressions formulas.
Calculate the maximum number of circles within a rectangle - can be used to calculate the numbers of pipes or wires in a conduit or similar.
Calculate the arithmetic mean, median and modal values from discrete data sets.
The rules of logarithms - log
10 and log e for numbers ranging 1 to 1000.
Calculate square, cube, square root and cubic root. Values tabulated for numbers ranging 1 to 100.
The difference between standard, scientific and engineering number notation.
Prime numbers up to 1000.
Calculate the number of small circles that fits into an outer larger circle - ex. how many pipes or wires fits into a larger pipe or conduit.
Equations with one unknown.
Online calculator and solbing procedure for two equations with two unknowns.
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