CSIT 1st Semester
Math I Board Question Paper 2081

Views: …

MTH 117-2081 ✡

Tribhuvan University

Institute of Science and Technology

TUpapers.com TUpapers.com
Bachelor Level/First Year/First Semester/Science
Bachelors in Computer Science and Information Technology (MTH 117)
(Math I)
(New Course)
Full Marks: 60 Pass Marks: 24 Time: 3 hours

Candidates are required to give their answers in their own words as far as practicable.
The figures in the margin indicate full marks.

Section A
Long Answer Questions
Attempt any Two questions.
[2x10=20]
1.

(a) Determine whether each of the following functions is even, odd, or neither even nor odd. Also, sketch the graph of each of the functions:
(i) \(f(x)=x^5+x\)
(ii) \(g(x)=2x-x^2\).
(b) Find the value of \(\displaystyle \lim_{x\to4}\frac{\sqrt{x}-2}{x^2-16}\).

2.

(a) Use Newton’s method to find \(\sqrt[6]{2}\) correct to five decimal places.
(b) What do you mean by ordinary differential equation of first order? Differentiate linear and non linear differential equation. Find the order of the differential equation \(\left(\frac{d^2y}{dx^2}\right)^3=\left(\frac{dy}{dx}\right)^4\).

3.

(a) Find the Maclaurin series of the function \(f(x)=e^x\) and its radius of convergence.
(b) Find a vector equation and parametric equations for the line that passes through the point \((5,1,3)\) and is parallel to the vector \(\vec{i}+4\vec{j}-2\vec{k}\). Also, find two other points on the line.

Section B

Attempt any Eight questions

[8×5=40]
4.

Integrate \(\displaystyle \int_1^9 \frac{x-1}{\sqrt{x}}\,dx\).

5.

State Mean value theorem and verify this for \(f(x)=x^2-4x-3\) in the interval \([1,4]\).

6.

Find two positive numbers whose product is \(100\) and whose sum is a minimum.

7.

Find \(\frac{\partial z}{\partial x}\) and \(\frac{\partial z}{\partial y}\) if \(z\) is defined implicitly as a function of \(x\) and \(y\) by the equation \(x^3+y^3+z^3+6xyz=1\).

8.

Compare the value of \(\Delta y\) and \(dy\) if \(y=x^3+x^2-2x+1\) and \(x\) changes from \(1\) to \(1.05\).

9.

Find the area of the region enclosed by the parabola \(y=x^2\) and the line \(y=2\).

10.

Determine whether the series \(\displaystyle \sum_{n=1}^{\infty}\frac{1}{n^2+1}\) converges or diverges.

11.

If \(f(x)=x^2+2\), then find the range and domain of \(f(x)\).

12.

Identify the separable differential equations
(i) \(y'=x+2\)
(ii) \(y'=xy+4x-7y\)
(iii) \(y'=\ln y\)
(iv) \(y'=\sin(xy)\).