Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer the following (Any seven question
only):
The curvature of a straight line is:
The surface area of a solid of revolution generated by rotating $ y=f(x) $ about the x-axis is given by:
Let f be twice differentiable and suppose that $ f^{\prime}(c)=0 $. Which condition indicates that f has a local minimum at $ x=c $?
Evaluate the limit: $ \lim_{x\rightarrow0}\frac{1-\cos x}{x^{2}} $
Parseval's theorem for a Fourier series relates the Fourier coefficients to the energy of the function. Which statement best describes Parseval's theorem?
Which of the following is the correct Taylor series expansion for $ \ln(1+x) $ valid for $ |x|<1 $?
Let $ f(x,y)=\frac{x+y}{x-y} $ if $ x \ne y $, and 0 if $ x=y $. For which points on the line $ x=y $ is $ f(x,y) $ continuous?
Let $ f(x,y)=e^{xy} $. Which of the following best describes the total derivative of f at a point (a, b)?
Let A be a $ 5 \times 7 $ matrix with $ rank(A)=4 $. According to the Rank-Nullity Theorem, what is the dimension (nullity) of the null space?
Consider the system $ \begin{cases}x+y=5\\ 2x+2y=10\end{cases} $. Which of the following best describes the solution set of the system?
Q.2 Solve both questions :
Show that the Gamma function satisfies $ \Gamma(n+1)=n! $ For positive integers n.
Find the volume of the solid obtained by rotating the curve $ y=x^{2} $ about the x-axis from $ x=0 $ to $ x=a $.
Q.3 Solve both questions :
Evaluate the improper integral $ \int_{0}^{\infty}e^{-ax}\sin bx~dx $ where $ a>0 $ and $ b>0 $.
Let $ f(x)=x(x-3)^{2}, x\in\mathbb{R} $.
i. Show that f is continuous on [0,3] and differentiable on (0,3).
ii. Verify that $ f(0)=f(3) $.
iii. Use Rolle's Theorem to show that there exists at least one c in (0,3) such that $
f^{\prime}(c)=0 $. Find the value of c.
Q.4 Solve both questions :
Evaluate the limit $ \lim_{x\rightarrow0}\frac{\tan x-x}{x^{3}} $. Provide a detailed step-by-step application of L'Hôpital's rule.
Consider the function $ f(x)=x^{3}-6x^{2}+9x+5 $.
1. Find the critical points of f by solving $ f^{\prime}(x)=0 $.
2. Determine the nature (local maximum or minimum) of each critical point using the second
derivative test.
3. Find the absolute maximum and minimum of f on the closed interval [0, 5].
Q.5 Solve both questions :
Consider the series $ \Sigma_{n=1}^{\infty}\frac{(-1)^{n}\sqrt{n}}{n+1} $.
(i) Use the Alternating Series Test to show that the series converges.
(ii) Determine whether the series converges absolutely or only conditionally.
Write the Maclaurin series for $ \sin x $ up to (and including) the $ x^{5} $ term. Derive the Maclaurin series for $ \ln(1+x) $ and state its interval of convergence.
Q.6 Solve both questions :
Consider the function $ f(x)=x $, $ 0
Let $ A=\begin{bmatrix}1&2&3\\ 0&1&4\\ 5&6&0\end{bmatrix}
$.
i. Compute the determinant of A to verify whether A is invertible.
ii. Find the inverse of A.
iii. Determine the rank of A and use the Rank-Nullity theorem to find the nullity of the
associated linear transformation $ T:\mathbb{R}^{3}\rightarrow\mathbb{R}^{3} $ defined by
$ T(x)=Ax $.
Q.7 Solve both questions :
Let $ M=\begin{bmatrix}2&1\\ 1&2\end{bmatrix} $.
i. Show that M is symmetric.
ii. Find the eigenvalues and corresponding eigenvectors of M.
iii. Diagonalize M: that is, express it in the form $ M=PDP^{-1} $ where D is diagonal.
Find and classify the critical points of the function $ f(x,y)=x^{3}-3xy $.
Q.8 Solve both questions :
Find the maximum and minimum values of $ f(x,y)=x+2y $ subject to the constraint $ g(x,y)=x^{2}-9=0 $.
Consider the series $ \sum_{n=2}^{\infty}\frac{1}{n(\ln n)^{p}}, p>0 $.
(i) Show that the function $ f(x)=\frac{1}{x(\ln x)^{p}}, x\ge2 $ is positive,
continuous, and decreasing.
(ii) Use the Integral Test to determine for which values of p the series converges.
Q.9 Write short notes on any two of the following:
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer the following (Any seven question
only):
The curvature of a straight line is:
The surface area of a solid of revolution generated by rotating about the x-axis is given by:
Let f be twice differentiable and suppose that . Which condition indicates that f has a local minimum at ?
Evaluate the limit:
Parseval's theorem for a Fourier series relates the Fourier coefficients to the energy of the function. Which statement best describes Parseval's theorem?
Which of the following is the correct Taylor series expansion for valid for $ |x|<1 $?
Let if , and 0 if . For which points on the line is continuous?
Let . Which of the following best describes the total derivative of f at a point (a, b)?
Let A be a matrix with . According to the Rank-Nullity Theorem, what is the dimension (nullity) of the null space?
Consider the system . Which of the following best describes the solution set of the system?
Q.2 Solve both questions :
Show that the Gamma function satisfies For positive integers n.
Find the volume of the solid obtained by rotating the curve about the x-axis from to .
Q.3 Solve both questions :
Evaluate the improper integral where a>0 and b>0.
Let .
i. Show that f is continuous on [0,3] and differentiable on (0,3).
ii. Verify that .
iii. Use Rolle's Theorem to show that there exists at least one c in (0,3) such that $
f^{\prime}(c)=0 $. Find the value of c.
Q.4 Solve both questions :
Evaluate the limit . Provide a detailed step-by-step application of L'Hôpital's rule.
Consider the function .
1. Find the critical points of f by solving .
2. Determine the nature (local maximum or minimum) of each critical point using the second
derivative test.
3. Find the absolute maximum and minimum of f on the closed interval [0, 5].
Q.5 Solve both questions :
Consider the series .
(i) Use the Alternating Series Test to show that the series converges.
(ii) Determine whether the series converges absolutely or only conditionally.
Write the Maclaurin series for up to (and including) the term. Derive the Maclaurin series for and state its interval of convergence.
Q.6 Solve both questions :
Consider the function , $ 0<x< (that="" [-\pi,\pi]="" (="" $="" )).="" ).<="" \pi="" a="" are="" as="" b_{n}="\frac{2(-1)^{n+1}}{n}" be="" by="" coefficients="" expanded="" extension="" f(x)="" fourier="" given="" is="" is,="" odd="" of="" onto="" p="" series="" show="" sine="" that="" the="" to="" which=""> </x<>
Let $ A=\begin{bmatrix}1&2&3\ 0&1&4\ 5&6&0\end{bmatrix}
$.
i. Compute the determinant of A to verify whether A is invertible.
ii. Find the inverse of A.
iii. Determine the rank of A and use the Rank-Nullity theorem to find the nullity of the
associated linear transformation defined by
.
Q.7 Solve both questions :
Let .
i. Show that M is symmetric.
ii. Find the eigenvalues and corresponding eigenvectors of M.
iii. Diagonalize M: that is, express it in the form where D is diagonal.
Find and classify the critical points of the function .
Q.8 Solve both questions :
Find the maximum and minimum values of subject to the constraint $ g(x,y)=x^{2}-9=0 $.
Consider the series \sum_{n=2}^{\infty}\frac{1}{n(\ln n)^{p}}, p>0.
(i) Show that the function is positive,
continuous, and decreasing.
(ii) Use the Integral Test to determine for which values of p the series converges.
Q.9 Write short notes on any two of the following:
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer of the following (any seven Question
only):
Lagrange's mean value theorem can be proved for a function f(x) by applying Roll's mean value theorem
The function $ f(x) = x(x + 3) e^{-\frac{x}{2}} $ satisfy all conditions of Roll's mean value theorem in the interval [-3, 0]. Then the value of c is:
if $ \begin{bmatrix} 4/3 \\ 1 \end{bmatrix} $ is an eigenvector of $ \begin{bmatrix} 3 & 4 \\ 3 & 1 \end{bmatrix} $. What is the associated eigenvalue?
if f is continuous on [-2.354, 2.354] then
let $ f(x) = |x|^{\frac{3}{2}}, x \in R $ then
if $ A(2) = 2i - j + 2k, A(3) = 4i - 2j + 3k $, then $ \int_{2}^{3} A \cdot \frac{dA}{dt} dt $ is
if $ \nabla \times \vec{F} $. Then it is called.
if $ 3x + 2y + z = 0, x + 4y + z = 0, 2x + y + 4z = 0 $ be a system of equations, then
If f(x) is continuous in the closed interval [a,b] and f(x) exists in (a,b) and f(a) = f(b), then there exist at least one value $ c(a < c < b) $ Such that $ f'(c)=0 $ is called
The rank of the matrix $ \begin{bmatrix} 1 & 2 & 3 \\ 2 & 4 & 6 \\ 3 & 6 & 9 \end{bmatrix} $ is
Q.2 Solve both questions :
show that : $ \int_{0}^{\infty} x^2 e^{-x^4} dx \times \int_{\infty}^{\infty} e^{-x^4} dx = \frac{\pi}{8\sqrt{2}} $
Use L' Hospital rule to find the following limits. $ \lim_{x \to 0} \frac{\cos - \ln (1+x) - 1 + xy^x}{\sin^2 x} $
Q.3 Solve both questions :
Test the convergence of $ 1 + \frac{3}{7} x + \frac{3.6}{7.10} x^2 + \frac{3.6.9}{7.10.13} x^3 + \frac{3.6.9.12}{7.10.13.16} x^4 + \ldots $
Examine the convergence of the series of which the general term is $ 2^2 4^2 6^2 \cdots \frac{(2n-2)^2}{3.4.5 \cdots (2n-1)2n} x^{2n} $
Q.4 Solve both questions :
Obtain the fourth-degree Taylor's polynomial approximation to $ f(x) = e^{2x} $ about $ x = 0 $. Find the maximum error when $ 0 \leq x \leq 0.5 $
It is given the Rolle's theorem holds the function $ f(x) = x^3 + bx^2 + cx, 1 \leq x \leq 2 $ at the Point $ x = 4/3 $. Find the value of b and c.
Q.5 Solve both questions :
Evaluate $ \int_{0}^{\infty} \log \left( x + \frac{1}{x} \right) \frac{dx}{1+x^2} $
Discuss the convergence of the sequence whose n-th term is $ a_n = \frac{(-1)^n}{n} + 1 $.
Q.6 Solve both questions :
if $ f(x) = \log (1 + x), x > 0 $ using Maclaurin's theorem, show that for $ 0 < \theta < 1 $, $ \log (1 + x)=x - \frac{x^2}{2} + \frac{x^3}{3(1+\theta x)^3} $. Deduce that $ \log (1+x)=< x - \frac{x^2}{2} + \frac{x^3}{3} $ for $ x> 0 $
Using Taylor's theorem, express the polynomial $ 2x^3 + 7x^2 + x - 6 $ in powers of (x - 1).
Q.7 Solve both questions :
Find the values of a,b,c if A = $ \begin{bmatrix} 0 & 2b & c \\ a & b & -c \\ a & -b & c \end{bmatrix} $ is orthogonal?
Verify Cayley-Hamilton theorem for the matrix A = $ \begin{bmatrix} 1 & 4 \\ 2 & 3 \end{bmatrix} $ and find its inverse. Also express $ A^5 - 4A^4 - 7A^3 + 11A^2 - A - 10I $ as a linear polynomial in A.
Q.8 Solve both questions :
Expand $ \ln x $ in power of $ (x - 1) $ by Taylor's theorem.
By using Beta function evaluate $ \int_{0}^{1} x^5 (1 + x^3)^{10} dx $.
Q.9 Solve both questions :
Find the Fourier series to represent the function defined as $ f(x) = \begin{cases} x + \frac{\pi}{2}, & -\pi < x < 0 \\ \frac{\pi}{2} - x, & 0 < x < \pi \end{cases} $
Evaluate: (i) div F and Curl F, where F= grad $ (x^3 + y^3 + z^3 - 3xyz) $. (ii) If $ F = (x + y + z) i + j - (x + y)k $ show that $ F \cdot \text{Curl} F = 0 $.
Instructions:
- The marks are indicated in the right-hand margin.
- There are NINE questions in this paper.
- Attempt FIVE questions in all.
- Question No. 1 is compulsory.
Q.1 Choose the correct answer of the following (any seven Question
only):
Lagrange's mean value theorem can be proved for a function f(x) by applying Roll's mean value theorem
The function $ f(x) = x(x + 3) e^{-\frac{x}{2}} $ satisfy all conditions of Roll's mean value theorem in the interval [-3, 0]. Then the value of c is:
if $ \begin{bmatrix} 4/3 \\ 1 \end{bmatrix} $ is an eigenvector of $ \begin{bmatrix} 3 & 4 \\ 3 & 1 \end{bmatrix} $. What is the associated eigenvalue?
if f is continuous on [-2.354, 2.354] then
let $ f(x) = |x|^{\frac{3}{2}}, x \in R $ then
if $ A(2) = 2i - j + 2k, A(3) = 4i - 2j + 3k $, then $ \int_{2}^{3} A \cdot \frac{dA}{dt} dt $ is
if $ \nabla \times \vec{F} $. Then it is called.
if $ 3x + 2y + z = 0, x + 4y + z = 0, 2x + y + 4z = 0 $ be a system of equations, then
If f(x) is continuous in the closed interval [a,b] and f(x) exists in (a,b) and f(a) = f(b), then there exist at least one value $ c(a < c < b) $ Such that $ f'(c)=0 $ is called
The rank of the matrix $ \begin{bmatrix} 1 & 2 & 3 \\ 2 & 4 & 6 \\ 3 & 6 & 9 \end{bmatrix} $ is
Q.2 Solve both questions :
show that : $ \int_{0}^{\infty} x^2 e^{-x^4} dx \times \int_{\infty}^{\infty} e^{-x^4} dx = \frac{\pi}{8\sqrt{2}} $
Use L' Hospital rule to find the following limits. $ \lim_{x \to 0} \frac{\cos - \ln (1+x) - 1 + xy^x}{\sin^2 x} $
Q.3 Solve both questions :
Test the convergence of $ 1 + \frac{3}{7} x + \frac{3.6}{7.10} x^2 + \frac{3.6.9}{7.10.13} x^3 + \frac{3.6.9.12}{7.10.13.16} x^4 + \ldots $
Examine the convergence of the series of which the general term is $ 2^2 4^2 6^2 \cdots \frac{(2n-2)^2}{3.4.5 \cdots (2n-1)2n} x^{2n} $
Q.4 Solve both questions :
Obtain the fourth-degree Taylor's polynomial approximation to $ f(x) = e^{2x} $ about $ x = 0 $. Find the maximum error when $ 0 \leq x \leq 0.5 $
It is given the Rolle's theorem holds the function $ f(x) = x^3 + bx^2 + cx, 1 \leq x \leq 2 $ at the Point $ x = 4/3 $. Find the value of b and c.
Q.5 Solve both questions :
Evaluate $ \int_{0}^{\infty} \log \left( x + \frac{1}{x} \right) \frac{dx}{1+x^2} $
Discuss the convergence of the sequence whose n-th term is $ a_n = \frac{(-1)^n}{n} + 1 $.
Q.6 Solve both questions :
if $ f(x) = \log (1 + x), x > 0 $ using Maclaurin's theorem, show that for $ 0 < \theta < 1 $, $ \log (1 + x)=x - \frac{x^2}{2} + \frac{x^3}{3(1+\theta x)^3} $. Deduce that $ \log (1+x)=< x - \frac{x^2}{2} + \frac{x^3}{3} $ for $ x> 0 $
Using Taylor's theorem, express the polynomial $ 2x^3 + 7x^2 + x - 6 $ in powers of (x - 1).
Q.7 Solve both questions :
Find the values of a,b,c if A = $ \begin{bmatrix} 0 & 2b & c \\ a & b & -c \\ a & -b & c \end{bmatrix} $ is orthogonal?
Verify Cayley-Hamilton theorem for the matrix A = $ \begin{bmatrix} 1 & 4 \\ 2 & 3 \end{bmatrix} $ and find its inverse. Also express $ A^5 - 4A^4 - 7A^3 + 11A^2 - A - 10I $ as a linear polynomial in A.
Q.8 Solve both questions :
Expand $ \ln x $ in power of $ (x - 1) $ by Taylor's theorem.
By using Beta function evaluate $ \int_{0}^{1} x^5 (1 + x^3)^{10} dx $.
Q.9 Solve both questions :
Find the Fourier series to represent the function defined as $ f(x) = \begin{cases} x + \frac{\pi}{2}, & -\pi < x < 0 \\ \frac{\pi}{2} - x, & 0 < x < \pi \end{cases} $
Evaluate: (i) div F and Curl F, where F= grad $ (x^3 + y^3 + z^3 - 3xyz) $. (ii) If $ F = (x + y + z) i + j - (x + y)k $ show that $ F \cdot \text{Curl} F = 0 $.