9
Q1: given that p 0 ( x )=1 and p 1 ( x )=x , and determine p 2 ( x ) , p 3 ( x ) ,and p 4 ( x ) . Solution:- n=1 p 2 ( x )=x ( 3 2 x )− 1 2 ( 1 )= 3 2 x 2 1 2 n=2 p 3 ( x )=x ( 5 3 )( 3 2 x 2 1 2 )− 2 3 x= 5 2 x 3 x 3 ( 5 2 + 4 2 )= 1 2 ( 5 x 3 3 x ) n=3 p 4 ( x )= 7 4 xp 3 ( x )− 3 4 p 2 ( x )=( 7 4 x )( 5 2 x 3 3 x )−( 3 4 )( 3 2 x 2 1 2 ) = 1 8 ( 35 x 4 30 x 2 +3 ) Q2 : Derive Rodrigues formula By Legendre polynomials are given by p n ( x ) = ( 2 n1)( 2 n3) .3 1 n! {x n n ( n1 ) 2 n ( 2 n1) x n2 + n ( n1 )( n2) ( n3) 24 ( 2 n1 ) ( 2 n3) x n4 } Now integrating this n times from 0 to x, we obtain ¿ ( 2 n1 )( 2 n3) .31 ( 2 n) ! { x 2 n nx 2 n2 + n ( n1) 2 ! x 2 n4 } Which can be written ¿ ( 2 n1)( 2 n3) .3 1 ( 2 n )( 2 n1 )( 2 n2) 21 ( x 2 1) n or 1 2 n n! ( x 2 1) n Which proves that.

Q1 ask and ancer

  • Upload
    amnajam

  • View
    212

  • Download
    0

Embed Size (px)

DESCRIPTION

material properties

Citation preview

Q1:

given that and , and determine ,,and .Solution:-

Q2 : Derive Rodrigues formula By Legendre polynomials are given by

Now integrating this n times from 0 to x, we obtain

Which can be written

or

Which proves that.

Q3: prove that

Using the binomial theorem

We have

And the coefficient of in this expansion is

Which can be written as

i.e the required result thsult thus follows

Q4: Using the Rodrigues formula to determine and .Solution:-

Q5: determine Legendre polynomials

Solution:-

,,

(a)

+

From (a):-

Let m=m-2

m=n

m=n-2

Polynomial c0,c1x,c0(1-3x2),c1(x- x3)P0(x)=1c0=1P1(x)=xc1=1P2(x)=1-x2=1-3x2c0=-1/2

P3(x)=x- =x- x3c1=-3/2

P4(x)=1- +=1-10 x2+ x4c0=3/8

P5(x)= x- x3+ x5=x- x3+ x5c1=15/8

P6(x)=1-x2+ x4-

Q6: Find

Q7: Using Power series to solve Legendre's Equation :-

Whit n=3 & n=5, Find Legendre Polynomials

K=0,1,2,3,

n=2,4,6

n=5

Q8 : find a solution In the interval -0.5