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Test: Numerical Methods - 2 - Software Development MCQ


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15 Questions MCQ Test - Test: Numerical Methods - 2

Test: Numerical Methods - 2 for Software Development 2025 is part of Software Development preparation. The Test: Numerical Methods - 2 questions and answers have been prepared according to the Software Development exam syllabus.The Test: Numerical Methods - 2 MCQs are made for Software Development 2025 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Numerical Methods - 2 below.
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Test: Numerical Methods - 2 - Question 1

Which of the following methods is used for finding roots of an equation by approximating them iteratively?

Detailed Solution for Test: Numerical Methods - 2 - Question 1

Newton's method is an iterative numerical method used for finding roots of equations by approximating them. It uses the derivative of the function to iteratively update the approximation until a desired accuracy is achieved.

Test: Numerical Methods - 2 - Question 2

Which numerical method is used to estimate the definite integral of a function?

Detailed Solution for Test: Numerical Methods - 2 - Question 2

Simpson's formula is a numerical method used for approximating the definite integral of a function. It involves dividing the interval into smaller subintervals and approximating the integral using quadratic polynomials.

Test: Numerical Methods - 2 - Question 3

Which numerical method involves dividing the interval into smaller subintervals and approximating the integral using quadratic polynomials?

Detailed Solution for Test: Numerical Methods - 2 - Question 3

Simpson's formula is a numerical method that involves dividing the interval into smaller subintervals and approximating the integral using quadratic polynomials. It provides a more accurate approximation compared to the Trapezoidal rule.

Test: Numerical Methods - 2 - Question 4

Which numerical method is based on the idea of linear interpolation?

Detailed Solution for Test: Numerical Methods - 2 - Question 4

Newton's method is a numerical method based on the idea of linear interpolation. It uses the derivative of the function to iteratively update the approximation until a root is found.

Test: Numerical Methods - 2 - Question 5

Which of the following numerical methods can be used to find the maximum or minimum value of a function within a given interval?

Detailed Solution for Test: Numerical Methods - 2 - Question 5

Newton's method can be used to find the maximum or minimum value of a function within a given interval. By finding the roots of the derivative of the function, the critical points can be determined, which correspond to the maximum or minimum values.

Test: Numerical Methods - 2 - Question 6

What will be the output of the following code snippet?
import math

def newton_method(f, df, x0, tol):
    x = x0
    while abs(f(x)) > tol:
        x = x - f(x) / df(x)
    return x

f = lambda x: x**3 - x - 1
df = lambda x: 3 * x**2 - 1

root = newton_method(f, df, 1, 1e-6)
print(root)

Detailed Solution for Test: Numerical Methods - 2 - Question 6

The given code snippet implements Newton's method to find the root of the equation f(x) = x^3 - x - 1. The initial approximation x0 is set to 1. The code iteratively updates the approximation until the absolute value of f(x) is smaller than the tolerance (1e-6). The computed root will be 0.6180339887498949.

Test: Numerical Methods - 2 - Question 7

What will be the output of the following code snippet?
import math

def simpsons_rule(f, a, b, n):
    h = (b - a) / n
    sum1 = f(a) + f(b)
    sum2 = 0
    sum3 = 0
    for i in range(1, n):
        x = a + i * h
        if i % 2 == 0:
            sum2 += f(x)
        else:
            sum3 += f(x)
    return (h / 3) * (sum1 + 2 * sum2 + 4 * sum3)

f = lambda x: math.sin(x)
a = 0
b = math.pi / 2
n = 10

result = simpsons_rule(f, a, b, n)
print(result)

Detailed Solution for Test: Numerical Methods - 2 - Question 7

The given code snippet implements Simpson's rule to approximate the definite integral of the function f(x) = sin(x) in the interval [0, pi/2]. The code uses n = 10 subintervals for the approximation. The computed result will be approximately 1.000785192546629.

Test: Numerical Methods - 2 - Question 8

Consider the following equation: f(x) = x^2 - 4x + 3. Using Newton's method, what is the value of x0 that will converge to one of the roots of the equation if started from x0 = 2? (Note: df denotes the derivative of f)

Detailed Solution for Test: Numerical Methods - 2 - Question 8

To find the value of x0 that will converge to one of the roots of the equation f(x) = x^2 - 4x + 3 using Newton's method, we need to find the root. By initializing x0 = 2 and performing the iterations of Newton's method, the approximation will converge to the root x = 1.

Test: Numerical Methods - 2 - Question 9

Consider the following equation: f(x) = x^3 - 2x^2 - 11x + 12. Using the bisection method, how many iterations are required to approximate the root within an error tolerance of 0.001 if the initial interval is [2, 4]?

Detailed Solution for Test: Numerical Methods - 2 - Question 9

To approximate the root within an error tolerance of 0.001 using the bisection method, we start with the initial interval [2, 4]. In each iteration, the interval is halved until the width of the interval becomes less than the tolerance. The number of iterations required can be determined by counting the halvings. In this case, the root can be approximated within the desired tolerance in 7 iterations.

Test: Numerical Methods - 2 - Question 10

Consider the function f(x) = x^2 - 4x + 4. Which numerical method can be used to find the minimum value of f(x) in the interval [0, 5]?

Detailed Solution for Test: Numerical Methods - 2 - Question 10

To find the minimum value of f(x) = x^2 - 4x + 4 in the interval [0, 5], we can use the bisection method. By repeatedly dividing the interval and comparing the function values at the midpoints, the interval containing the minimum value can be narrowed down.

Test: Numerical Methods - 2 - Question 11

What will be the output of the following code snippet?
import math

def newton_method(f, df, x0, tol):
    x = x0
    while abs(f(x)) > tol:
        x = x - f(x) / df(x)
    return x

f = lambda x: x**3 - 2 * x - 2
df = lambda x: 3 * x**2 - 2

root = newton_method(f, df, 2, 1e-5)
print(root)

Detailed Solution for Test: Numerical Methods - 2 - Question 11

The given code snippet implements Newton's method to find the root of the equation f(x) = x^3 - 2x - 2. The initial approximation x0 is set to 2. The code iteratively updates the approximation until the absolute value of f(x) is smaller than the tolerance (1e-5). The computed root will be approximately 1.3518188902833395.

Test: Numerical Methods - 2 - Question 12

What will be the output of the following code snippet?
import math

def simpsons_rule(f, a, b, n):
    h = (b - a) / n
    sum1 = f(a) + f(b)
    sum2 = 0
    sum3 = 0
    for i in range(1, n):
        x = a + i * h
        if i % 2 == 0:
            sum2 += f(x)
        else:
            sum3 += f(x)
    return (h / 3) * (sum1 + 2 * sum2 + 4 * sum3)

f = lambda x: math.sin(x)
a = 0
b = math.pi / 2
n = 4

result = simpsons_rule(f, a, b, n)
print(result)

Detailed Solution for Test: Numerical Methods - 2 - Question 12

The given code snippet implements Simpson's rule to approximate the definite integral of the function f(x) = sin(x) in the interval [0, pi/2]. The code uses n = 4 subintervals for the approximation. The computed result will be approximately 0.8976839622050416.

Test: Numerical Methods - 2 - Question 13

Consider the following equation: f(x) = x^3 + x^2 - 5x - 3. Using the bisection method, how many iterations are required to approximate the root within an error tolerance of 0.001 if the initial interval is [-2, 0]?

Detailed Solution for Test: Numerical Methods - 2 - Question 13

To approximate the root within an error tolerance of 0.001 using the bisection method, we start with the initial interval [-2, 0]. In each iteration, the interval is halved until the width of the interval becomes less than the tolerance. The number of iterations required can be determined by counting the halvings. In this case, the root can be approximated within the desired tolerance in 11 iterations.

Test: Numerical Methods - 2 - Question 14

Consider the following equation: f(x) = x^2 - 2. Using Newton's method, what is the value of x0 that will converge to one of the roots of the equation if started from x0 = 2? (Note: df denotes the derivative of f)

Detailed Solution for Test: Numerical Methods - 2 - Question 14

To find the value of x0 that will converge to one of the roots of the equation f(x) = x^2 - 2 using Newton's method, we need to find the root. By initializing x0 = 2 and performing the iterations of Newton's method, the approximation will converge to the root x = -1.414213562373095.

Test: Numerical Methods - 2 - Question 15

Consider the function f(x) = x^3 - x^2 - 2x + 1. Which numerical method can be used to find the maximum value of f(x) in the interval [0, 2]?

Detailed Solution for Test: Numerical Methods - 2 - Question 15

To find the maximum value of f(x) = x^3 - x^2 - 2x + 1 in the interval [0, 2], we can use the Trapezoidal rule. By approximating the integral of the function over the interval using trapezoids, we can determine the maximum value. The Trapezoidal rule can handle both continuous and discrete functions.

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