what is finite diferences?
438946
A way to estimate a derivative and define a general way of solving differential equations numerically. See the links for more information.
794869
Here's a good website that discuss implicit differentiation with some example problems.\n\nHope this helps
628907
There are two possible types of discontinuities. The first is that the function jumps between two values of non-zero difference somewhere, like a step function, or diverges like 1/x near 0. The second is a removable discontinuity, where the function is simply undefined near a point, but the limit of the function exists near that point. This is like f(x) = (x^2 - 1)/(x + 1) near the point x = -1. This is not the same as g(x) = x - 1.\nNow, log(x) is continuous on positive inputs and mod(x) is continuous, so the composition of the functions log(mod(x)) is continuous for positive values of mod(x) (this is a very basic theorem in analysis. See http://mathworld.wolfram.com/ContinuousFunction.html ). \nAt the remaining point mod(x) = 0, log(mod(x)) diverges. \nIf we now compose with the reciprocal function (log(mod(x)))^(-1), we note from the same theorem that this function is again continuous except when log(mod(x)) = 0 (because x^(-1) is discontinuous at x = 0). We know that log(x) = 0 if and only if x = 1, so (log(mod(x)))^(-1) is discontinuous at x = 1 and -1.\nNow we need to check the previously divergent point x = 0 for its behavior. It should be easy for you to show that f(x) = (log(mod(x)))^(-1) approaches 0 as x approaches 0, as the term log(mod(x)) decreases without bound near 0. However, the value of f(0) is not 0; it is not defined, as log(0) is not defined. Thus x = 0 is a removable discontinuity.
735897
Let s be in S.  Since f is a homomorphism, f(r)=f(1)*f(r), thus \ns*f(r)=s*f(1)*f(r).  We rearrange and factor to get\n[s-s*f(1)]*f(r)=0.  The hypotheses imply that f(r) is not a zero divisor, so we conclude that s=s*f(1).  Similarly using f(r)=f(r)*f(1) we get s=f(1)*s, thus f(1) is an identity element.
126637
http://myweb2.search.yahoo.com/search?p=%22difference+between+a+function+and+an+equation%22&ei=UTF-8&fr=slv1-msgr&x=wrt
173766
same as differnce between 1 and 2
210942
() vs )(\n\nhow would something be quasi concave
21931
It's like the difference between an exponent and a polynomial.\n\nDifferential equations are equations that can contain multiple derivatives (first derivative, second derivative, etc.), each with a coefficient. \n\nhttp://opera.answers.com/Differential%20Equations
1133458
dB diff = 20 * log10(d1/d2) \n\n10 meters
518009
d/dx: I say "d.d.x.", or the derivative with respect to x\nd^2/dx^2: The second derivative with respect to x\nd^4f/dx^4: the fourth derivative of the function with respect to x\n\nf': F prime, or the derivative of the function\nf": F double prime, or the 2nd derivative of the function\nf''': F triple prime, or the 3rd derivative of the function\nn!: N factorial
274601
See the entry http://en.wikipedia.org/wiki/Finite_element_method#Comparison_to_the_finite_difference_method .
810661
A difference is the answer to a subtraction problem.\nExample: 5-4=1    the difference of 5 and 4 is 1.
922587
ok\nf(x) = 20 - x\nf(0) = 20 - 0 = 20\nf(2) = 20 - 2 = 18\nf(4) = 20 - 4 = 16\nf(8) = 20 - 8 = 12
1171599
.(–2.5)(20) = -50\n\narithmetic, not algebra
573927
single replacement, double replacement, decomposition, synthesis
917590
The notation 's', 'p', 'd', and 'f' originate from a now-discredited system of categorizing spectral lines.\n\ns= sharp\np= principal\nd= diffuse\nf= fundamental
950002
d/F = 0.8\nso d = 0.8F\n\nWhen F = 25\nd = 20\n\nWhen F = 40\nd = 32\n\nSo 20 ≤ d ≤ 32