Forward, Backward, and Central Differences
Only three forms are commonly considered: forward, backward, and central differences.
A forward difference is an expression of the form
Depending on the application, the spacing h may be variable or constant.
A backward difference uses the function values at x and x − h, instead of the values at x + h and x:
Finally, the central difference is given by
Read more about this topic: Finite Difference
Famous quotes containing the words central and/or differences:
“The best laws cannot make a constitution work in spite of morals; morals can turn the worst laws to advantage. That is a commonplace truth, but one to which my studies are always bringing me back. It is the central point in my conception. I see it at the end of all my reflections.”
—Alexis de Tocqueville (1805–1859)
“I trust the time is nigh when, with the universal assent of civilized people, all international differences shall be determined without resort to arms by the benignant processes of civilization.”
—Chester A. Arthur (1829–1886)