Number Theory, Complex Variables and 2-D 2018 – BSc Computer Science Part 1

Paper code: 13503
1503
B.Sc. (Computer Science) (Part 1)
Examination, 2018
Paper No. 1.3
NUMBER THEORY, COMPLEX VARIABLES AND 2-D

Time: Three Hours] [Maximum Marks: 50

Note: Attempt all the five questions. All questions carry equal marks. Symbol used are as usual. Attempt any two parts of each question.

1. (a) State and prove fundamental theorem of arithmetic.

    (b) State and prove Gauss theorem.

    (c) Discuss Euclidean algorithm.

2. (a) Find the equation of the parabola with latus rectum joining the points (3, 5) and (-3, 3).

    (b) Find the eccentricity, the co-ordinate of the foci, the length of latus rectum of the ellipse .

    (c) The foci of a hyperbola are the points . Find the equation of the curve if e = 5/4.

3. (a) Express in the form A + iB.

    (b) Show that the modulus of the product of two complex numbers is the product of their module.

    (c) Find the square root of 2 + 3i.
4. (a) State and prove De-Moiver’s theorem.

    (b) Find .

    (c) if and , represent z and w accurately on complex plane.

5. (a) State and prove fundamental theorem of congruence relation.

    (b) If p is a prime numbers and a is any integer, then show that a^p a (modulo p).

    (c) State and prove Wilson’s theorem.

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