All right, here's how to use a sieve to find prime numbers. First, you make a table of all the odd numbers from 1 to n^x (with n and x being any number, try to make them small), but put a two where the one would be. (Let's say that n=12 and x=4.) First, circle the 2 and mark out all the multiples of two. Then circle the next number (3) and mark out all of the multiples of three. Repeat for 5 and 7. Skip the 9, because it's been marked out, then go on to 11. Then, since 13 is the first number that is more then n, all the numbers that weren't crossed out and are less than n^2 are all prime numbers. Then you cross out all of the multiples of those primes, and then all of the unmarked numbers less than n^3 are primes. Repeat one more time, and you're done.
ShiViChess Jul 25, 2009
m is a type of number p is a type of number n is a type of number c is a type of number and the bold text in parentheses is a way of finding the possible values of n and c use the following formulas to find out what m, p, n, and c represent: m = 2^n - 1 p = 2^(n - 1) * m (To find the 'n' and 'c' that are less than a number, list all of the odd numbers that are less than a certain number (we'll call this number 't'). However, where you would put a 1, put a 2. The first number is an 'n', and all the numbers that are multiples of 'n' are 'c'. Find the smallest number that hasn't been marked as an 'n' or a 'c'. Make that number an 'n', and all the numbers that are multiples of 'n' are 'c'. Repeat this until the next number is more than the square root of 't', then the rest of the unmarked numbers are 'n'.)
Who has learned the differentiation? Maybe we can discuss it here......
Factorize X^2-1. Hence factorize(a+3)^2-1.
a=8547397b=72357452c=52986123 verify and solve that- axb+c is not equal to axc+b
jeremychung Jul 11, 2009
this is a forum for suggestions for the group like,new theme,new logo anything you want but the admins will have to appove it first
jamesamble Jul 11, 2009
30+30-2+5+68+50__ what is the anwser
Jokksi99 Jul 9, 2009
The vertices of triangle ABC are A(3,-1),B(-5,5)and C(2,4).Find the equation of the median CD of the triangle where D is a point on AB. Answer will be uploaded on 6th July.
jeremychung Jul 5, 2009
simple maths- Q.1. 1489+(-467)+{+78+(-67)} solve it.
jeremychung Jul 3, 2009
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