Changes

==Description==

==Description==

*This function gives the Coefficients of the Pascal triangle.

*This function gives the Coefficients of the Pascal triangle.

*In <math>PASCALTRIANGLE(r)</math> , r is the row  number of the Pascal triangle.

*In <math>PASCALTRIANGLE(r)</math> , <math>r</math> is the row  number of the Pascal triangle.

*Pascal triangle is the arrangement of numbers of the Binomial coefficients in a triangular shape.

*Pascal triangle is the arrangement of numbers of the Binomial coefficients in a triangular shape.

*It is started with the number 1 at the top in the 1st row.

*It is started with the number <math>1</math> at the top in the 1st row.

*Then from the 2nd row each number in the triangle is the sum of the two directly above it.

*Then from the 2nd row each number in the triangle is the sum of the two directly above it.

*The construction is related to the binomial coefficients by Pascal's rule is :                                 

*The construction is related to the Binomial Coefficients by Pascal's rule is :                                 

<math>(x+y)^n=\sum_{k=0}^n \binom{n}{k}x^{n-k} .y^k </math>.   where <math> \dbinom{n}{k}</math> is the binomial coefficient.

<math>(x+y)^n=\sum_{k=0}^n \binom{n}{k}x^{n-k} .y^k </math>.

where <math> \dbinom{n}{k}</math> is the binomial coefficient.

*This function will return the result as error when  <math> r \le 0</math>.

*This function will return the result as error when  <math> r \le 0</math>.