This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university
A Firstranker's choice
B.Sc. (Part—III) Semester—V Examination
--- Content provided by FirstRanker.com ---
5S : MATHEMATICS (New)
(Mathematical Methods)
Paper—X
Time : Three Hours] [Maximum Marks : 60
Note :— (1) Question No.1 is compulsory and attempt it once.
--- Content provided by FirstRanker.com ---
(2) Solve ONE question from each Unit.
- Choose the correct alternative (1 mark each) :
- If p (x) is the solution of Legendre’s D.E., then p (-1) is :
- -1
- 1
- 0
- The value of integral ∫x p₁(x) dx , where p₁(x) is Legendre’s polynomial of degree 1, equals :
- 5/3
- 2/3
- 1/3
- 0
- The value of J½(x) equals :
- cos x
- √(2/πx) sin x
- √(2/πx) cos x
- sin x
- Eigen functions corresponding to different Eigen values are :
- Linearly dependent
- Linearly independent
- Real
- None
- The coefficient in a half range sine series for the function f(x) = sin x defined on [0, π] is given by :
- (2/π) ∫ sin x cos(nx/π) dx
- (2/π) ∫ cos x cos(nx/π) dx
- (2/π) ∫ sin x sin(nx/π) dx
- (2/π) ∫ sin x sin(nx/π) dx
- The function f(x) = |x| is
- Odd
- Even
- Even and Odd
- None of these
- If L[f(t)] = F(s). then L[f(at)] is :
- F(s-a)
- (1/a)F(s/a)
- F(s/a)
- aF(s/a)
- The value of L-1[1/(s-a)] is
- 1
- t
- eat
- e-at
- The Fourier sine transform of f(x) = e-ax, x ≥ 0 is :
- a/(a²+n²)
- n/(a²+n²)
- 1/(a²+n²)
- 1/(a²-n²)
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
--- Content provided by FirstRanker.com ---
- If p (x) is the solution of Legendre’s D.E., then p (-1) is :
UNIT—I
-
- Show that pn(x) is the coefficient of hn in the ascending power series expansion of (1 - 2xh + h²)-1/2. 5
- Prove that np'n = xp'n - p'n-1. 5
- Prove that x³ = (2/5)p₅(x) - (3/5)p₁(x). 5
--- Content provided by FirstRanker.com ---
-
- Prove that ∫x pn(x)p'n(x) dx = 2n(n+1)/(2n+1). 5
- Prove that ∫pₙ(x) dx = 0. 5
- Prove that pₙ(x) = (1/2ⁿn!) dⁿ/dxⁿ (x²-1)ⁿ. 5
--- Content provided by FirstRanker.com ---
UNIT—II
-
- Prove that J½(x) = √(2/πx) sin x. 4
- Prove that xJ'n = nJn - xJn+1. 4
- Evaluate ∫[J₁(x) - J₃(x)]dx. 2
--- Content provided by FirstRanker.com ---
-
- Prove that Eigen values of the S-L problem are real. 4
- Prove that d/dx (xnJn) = xnJn-1. 3
- Prove that J-½(x) = √(2/πx) cos x. 3
UNIT—III
--- Content provided by FirstRanker.com ---
-
- If the trigonometric series Σ (aₙ cos nx + bₙ sin nx) converges uniformly to f(x) in -c < x < c + 2π, then find the Fourier coefficient of f(x). 5
- Obtain Fourier Series in [0, 2π] for the function f(x) = x². 5
-
- Obtain Fourier Series in [-π, π] for the function : f(x) = -1, -π < x < 0 x, 0 < x < π 5
- Obtain Fourier cosine series in [0, π] for the function f(x) = sin x. 5
--- Content provided by FirstRanker.com ---
UNIT—IV
-
- Prove that L[tⁿf(t)]=(-1)ⁿ dⁿ/dsⁿ F(s), n=1,2,3..... 4
- Find L[sin t - cos 2t - cos 3t]. 3
- Show that L(tⁿ) = n!/sn+1, s>0. 3
--- Content provided by FirstRanker.com ---
-
- Solve the D.E. y'' - 4y' + 4y = e2t, y(0) = 0, y'(0) = -1 by using Laplace transform. 4
- Find the inverse Laplace transform of 1/((s-2)(s+1)) by using Convolution theorem. 3
- Prove that L(∂u/∂t) = sL(u(x, t)) - u(x, 0). 3
--- Content provided by FirstRanker.com ---
UNIT—V
-
- Find the finite Fourier sine and cosine transform of f(x) = sin kx in (0, π). 4
- Find the Fourier transform of the function : f(x) = 1, |x|<1 0, |x|>1 4
- Prove that ∫f'(x) sin(nx) dx = -nFc(n). 2
--- Content provided by FirstRanker.com ---
-
- Find the Fourier sine and cosine transform of the function f(x) = xn-1 n> 0. 5
- Find finite Fourier cosine transform of ∂u/∂t and ∂²u/∂t²; where u = u(x, t). 5
--- Content provided by FirstRanker.com ---
This download link is referred from the post: SGBAU BSc Last 10 Years 2010-2020 Question Papers || Sant Gadge Baba Amravati university