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Hi, Does anyone know how to code newton's method for finding the roots of polynomial functions? im not sure whether i need to do this manually, or just code something with a loop to stop when it gets to the desired result thanks guys! _________________________________________________________________ Looking to move somewhere new this winter? Let ninemsn property help [[elided Hotmail

Hi, Does anyone know how to code newton's method for finding the roots of polynomial functions? im not sure whether i need to do this manually, or just code something with a loop to stop when it gets to the desired result thanks guys! _________________________________________________________________ Looking to move somewhere new this winter? Let ninemsn property help [[elided Hotmail

Hi Guys, Im trying to find the exponential of a matrix. Can someone please help me do this? Thanks a lot _________________________________________________________________ View photos of singles in your area Click Here =1&lage=18&uage=55&cl=14&sl=0&dist=50&po=1&do=2&trackingid=1046138&r2s=1&_t=773166090&_r=WLM_EndText

...if i have the following function, f <- function(x) x^3-2*x^2+3*x-5 i need a simple function for the derivative of this with respect to 'x', so that i can then sub in values to the the derivative function, and use Newtons method of finding a root for this. Please help. Regards, Kon Knafelman _________________________________________________________________ [[alternative HTML version deleted]]

Hey guys, i have a relatively simple problem. I need to use netwon's method to find the root of a polynomial, lets say x^3-2x-1 i start off with p <- function(x) x^3-2*x-1 My method, which im sure is very amateur, is to type another function, which is the derivative of p, and after picking an initial value to start off with, i follow the steps of newton's method manually, but i dont

Hey guys, sorry im drawing a mental blank. i have coded the function: y <- function(x) 6*x^4-(1*x^2)^3 How do i evaluate this function for a given x? i know this is a ridiculous question, but thanks anyway _________________________________________________________________ [[elided Hotmail spam]] [[elided Hotmail spam]] =Domain_tagline&_m=EXT [[alternative HTML version

Hi Guy, I am having trouble graphing the following function √2Γ(n/2)/[√n − 1Γ((n − 1)/2 for the values of n between 2 and 50. i know that Γ(n) = (n-1)!, which in R is factorial(n-1) When i type that into R, using y <- function(n)..... and then plot(y,2,50), it doesnt give me anything meaningful, in fact, it comes up with a message saying something like "in gamma(n+1) ploted" or

Hey, I am having trouble graphing the following function √2Γ(n/2)/[√n − 1Γ((n − 1)/2 for the values of n between 2 and 50. i know that Γ(n) = (n-1)!, which in R is factorial(n-1) When i type that into R, using y <- function(n)..... and then plot(y,2,50), it doesnt give me anything meaningful, in fact, it comes up with a message saying something like "in gamma(n+1) ploted" or

Hey Guys, i have the sample variances for 1000 samples, and i want to fit it to a chi-squared distribution. after making a loop for the simulation initially, i have the following code to compute the variances samples = replicate(n, rnorm(m, 0, 1), simplify=FALSE) variances = sapply(samples, var) summary(variances) can someone please help me fit this to a chi-squared distribution with n degrees

Hi Guys, i think this is a relatively simple question. I have coded the following polynomial function y= function(x) x^3-2*x^2+1 I need to find the inverse of this, but the code i am using now isnt returning what i want it to. What is the general code for finding an inverse function? Thanks guys _________________________________________________________________ View photos of singles in

Dear R users, Can anyone please tell me how to generate a large number of samples in R, given certain distribution and size. For example, if I want to generate 1000 samples of size n=100, with a N(0,1) distribution, how should I proceed? (Since I dont want to do "rnorm(100,0,1)" in R for 1000 times) Thanks for help Debbie

Hey guys, im sort of a beginner with R, but here's what i need to do. i need to perform a time series analysis on a set of financial data that i've been given. im trying to look at the ACF and PACF and fit it to a particular model (i think its the ARIMA model because i've read that financial data resembles the random walk, where the ARIMA model fits). is this correct? if my data is

Hey guys, im sort of a beginner with R, but here's what i need to do. i need to perform a time series analysis on a set of financial data that i've been given. im trying to look at the ACF and PACF and fit it to a particular model (i think its the ARIMA model because i've read that financial data resembles the random walk, where the ARIMA model fits). is this correct? if my data is