## Monday, May 11, 2009

### How to create a multimonitor setup ?

Article found in CHIP megazine Nov 2008 page no: 114

### Sequence & Series Formulas

Arithmatic Progression
a,a+d,a+2d...., a+nd

• nth term of arithmatic progression
Tn = a + (n-1) d
• Sum of n - terms of arithmatic progression
Sn= (n/2) [ 2a + (n - 1) d]
• if a,b and c are in arithmatic progression then b = (a + c)/2.
Geomatric Progression
a,ar,ar^2,..., ar^n
• nth term of geomatric progression is given by Tn = a r^(n-1).
• Sum of the first n terms of geomatric progression is given by;
Sn = a [ (1 - r^n) / (1 - r) ] , for r<1>
Sn = a [ (r^n - 1)/ (r - 1) ], for r>1
• if three quantities a,b and c are in GM then b = Sqrt(ac);
• Infinite Geomatric Series
when |r|<1
S* = a / (1 - r);
when |r|>1 then
S*= Infinity;
Harmonic Mean
• HM of a and b is 2ab/(a+b).
• nth terms of Harmonic Progression is  Tn = 1 / [ a + (n-1) d ]
Other Important Formulas

• Sum of first n - natural number is given by:  summation (r=1 to n)  : n (n + 1) / 2.
• Sum of squares of first n - natural number is given by summation (r=1 to n) :[ n ( n + 1 ) (2n + 1)  ] / 6
• Sum of cubes of first n - natural number is given by summation (r=1 to n) : [n^2 (n+1)^2 ]
/4.

## Sunday, May 10, 2009

### Paging Program

Paging Related C Program:
Input : 45
Output : 10 + 10 + 10 + 10 + 5

#include
#include

void main()
{
int n,low,high,i=0;
clrscr();
printf("Enter number : ");
scanf("%d",&n);

{
low=i;
high=i+1;
i++;