BIT 3rd Semester
Numerical Method Board Question Paper 2080

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BIT 203-2080 ✡

Tribhuvan University

Institute of Science and Technology

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Bachelor Level/Second Year/Third Semester/Science
Bachelors in Information Technology (BIT 203)
(Numerical Method)
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.

Write an algorithm and a C-Program to obtain roots of non-linear equation using Newton Raphson Method.

2.

Solve the following ordinary differential equation using shooting method.
\(y'' + xy' - xy = 2x\), with boundary conditions \(y(0)=1\); and \(y(2)=10\)

3.

Compare and contrast between Jacobi iterative methods and Gauss Seidal method? Solve the following equation using Gauss Seidal method.
\(x + 2y + 3z = 5\), \(2x + 8y + 22z = 6\) and \(3x + 22y + 82z = -10\)

Section B

Attempt any Eight questions

[8×5=40]
4.

Use secant method to estimate the root of the equation \(x^2 - 5x + 6 = 0\), with initial estimate \(x_1 = 4\) and \(x_2 = 2\) (EPS=0.05).

5.

Solve the double integration using Simpson's 1/3 rule.
\[\int_{2}^{2.6} \int_{4}^{4.4} \frac{dx\, dy}{xy}\]

6.

What are the sources of errors? Discuss various types of errors encounters in numerical computation.

7.

Fit a second order polynomial to the data in the table below:

X12345
F(x)26122030

8.

Solve the following differential equation \(\frac{dy}{dx} = 3x + \frac{y}{2}\) with \(y(0) = 1\) for \(x = 0.2\) \((h = 0.1)\) using Euler's Method.

9.

Why Numerical Integration is required? Compute the integral: \(I = \int_{-1}^{1} e^x dx\) using composite trapezoidal rule for \(n = 4\).

10.

Evaluate \(\frac{dy}{dx}\) at \(x = 5\) using Newton's forward interpolation formula using the following table.

X13579
y-1.2012.80119.60472.801302.80

11.

Find the Eigen values and Eigen vectors of the Matrix:
\[A = \begin{bmatrix} 3 & -1 \\ 1 & 1 \end{bmatrix}\]

12.

Solve the Poisson's equation \(\frac{\partial^2 f}{\partial x^2} + \frac{\partial^2 f}{\partial y^2} = 2x^2y^2\) over the square domain \(0 \leq x \leq 3\) and \(0 \leq y \leq 3\) with \(f=0\) on the boundary and \(h = 1\).