Gujarat Technological UniversitySummer 2024 examination

GTU 2140706 Numerical and Statistical Methods for Computer Engineering Summer 2024 Question Paper & PDF

B.E. · Computer Engineering · Semester 4 · Subject code 2140706
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Total
70 marks
To pass
23 marks (33%)
Duration
2.5 Hours 10:30 AM – 1:00 PM
Questions
5 with internal choice
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Q.1

14 Marks
(a)
3 marks

Round off the number 865250 to four significant figures and compute absolute error, relative error.

(b)
4 marks

Find a root of the equation 𝑥³ − 4𝑥 − 9 = 0, using the bisection method. Carry out computations upto the 6th iteration.

(c)
7 marks

Define ill-conditioned system. Solve the following system by Gauss sediel method: 27𝑥 + 6𝑦 − 𝑧 = 85, 6𝑥 + 15𝑦 + 2𝑧 = 72 , 𝑥 + 𝑦 + 54𝑧 = 110

Q.2

14 Marks
(a)
3 marks

Evaluate ∫ 𝑑𝑥 1+𝑥2 6 0 by trapezoidal rule taking h = 1.

(b)
4 marks
Prove that
1)𝐸 = 𝑒ℎ𝐷
2)ℎ𝐷 = log (1 + ∆)
(c)
7 marks

Using Runge-Kutta method of fourth order, Solve for y at x = 1.2, 1.4 . Given that dy dx = 2xy+ex x²+xex and y(1) = 0.

(c)
7 marks

Using Euler’s method, find an approximate value of y at 𝑥 = 1 taking h = 0.1. Given that 𝑑𝑦 𝑑𝑥 = 𝑥 + 𝑦 and 𝑦(0) = 1.

Q.3

14 Marks
(a)
3 marks

Find the number of roots of the equation 𝑥³ − 3𝑥² − 4𝑥 + 13 = 0 in the interval [-1,0].

(b)
4 marks

Find a real root of the equation xlog10x = 1.2 by regula falsi method correct to three decimal places.

(c)
7 marks

Find the polynomial f(x) using Lagrange’s formula and hence find f(3) for following table: x 0 1 2 5 f(x) 2 3 12 147

(a)
3 marks
Derive iterative formula for √𝑁.
(b)
4 marks

Find a root of the equation 𝑥³ − 2𝑥 − 5 = 0 by secant method correct to three decimal places.

(c)
7 marks

Find the polynomial using interpolation formula for the following values. Hence evaluate f(4). x 0 1 2 3 f(x) 1 2 1

Q.4

14 Marks
(a)
3 marks

Find a root of the equation 𝑥⁴ − 𝑥 = 10 by Newton Raphson method correct to two decimal places.

(b)
4 marks

Evaluate ∫ 𝑥2 1+𝑥3 𝑑𝑥 1 0 by Simpson’s 1/3rd rule taking h = 0.25.

(c)
7 marks
Fit a straight line to the following data:

x 6 7 7 8 8 8 9 9 10 y 5 5 4 5 4 3 4 3

(a)
3 marks

Find a root of the equation 𝑥³ − 2𝑥² + 𝑥 − 2 = 0 by Bairstow method. Carry first iteration with 𝑝0 = 𝑞0 = 0.

(b)
4 marks

Evaluate ∫ 1 1+𝑥 𝑑𝑥 3 0 with n=6 by using Simpson’s 3/8th rule.

(c)
7 marks
Fit a second degree parabola to the following data:

x 0 1 2 3 4 y 1 1.8 1.3 2.5 6.3

Q.5

14 Marks
(a)
3 marks
Calculate the arithmetic mean for the following data:

Class 0-8 8-16 16-24 24-32 32-40 40-48 Frequency 8 7 16 24 15

(b)
4 marks
Find the first four moments for the set of numbers 2,4,6,8.
(c)
7 marks

Calculate the two regression coefficients from the following data and find correlation coefficient. x 7 4 8 6 5 y 6 5 9 8

(a)
3 marks

A sample of 3 items is selected at random from a box containing 10 items of which 4 are defective. Find the expected number of defective items.

(b)
4 marks
Calculate the correlation coefficient between x and y using the following data:

x 2 4 5 6 8 11 y 18 12 10 8 7

(c)
7 marks
Obtain the two regression lines from the following data:

x 6 2 10 4 8 y 9 11 5 8

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Official Gujarat Technological University (GTU) examination paper for Numerical and Statistical Methods for Computer Engineering (Summer 2024, B.E. · Computer Engineering, Sem 4). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.

Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.

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