Special Functions

Description: This quiz covers various topics related to Special Functions, which are mathematical functions that are frequently encountered in various fields of science and engineering.
Number of Questions: 15
Created by:
Tags: special functions gamma function beta function hypergeometric function legendre polynomials bessel functions
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What is the value of the Gamma function at 1?

  1. 0

  2. 1

  3. 2

  4. 3


Correct Option: B
Explanation:

The Gamma function at 1 is defined as (\Gamma(1) = 1).

Which of the following is a property of the Beta function?

  1. $\Beta(x, y) = \Beta(y, x)$

  2. $\Beta(x, y) = \Beta(1-x, 1-y)$

  3. $\Beta(x, y) = \Gamma(x) \Gamma(y)$

  4. $\Beta(x, y) = \frac{\Gamma(x) \Gamma(y)}{\Gamma(x+y)}$


Correct Option: D
Explanation:

The Beta function satisfies the property (\Beta(x, y) = \frac{\Gamma(x) \Gamma(y)}{\Gamma(x+y)}).

What is the value of the Hypergeometric function (_2F_1(1, 2; 3; x)) at x = 0?

  1. 0

  2. 1

  3. 2

  4. 3


Correct Option: B
Explanation:

The Hypergeometric function (_2F_1(1, 2; 3; x)) at x = 0 is equal to 1.

Which of the following is a property of the Legendre polynomials?

  1. They are orthogonal on the interval ([-1, 1])

  2. They satisfy the differential equation ((1-x^2)y'' - 2xy' + n(n+1)y = 0)

  3. They are complete on the interval ([-1, 1])

  4. All of the above


Correct Option: D
Explanation:

Legendre polynomials possess all of the mentioned properties.

What is the order of the Bessel function (J_\nu(x))?

  1. $\nu$

  2. $\nu+1$

  3. $\nu-1$

  4. $\nu+2$


Correct Option: A
Explanation:

The order of the Bessel function (J_\nu(x)) is (\nu).

Which of the following is a property of the modified Bessel function (I_\nu(x))?

  1. It is related to the Bessel function (J_\nu(x)) by (I_\nu(x) = i^{-\nu} J_\nu(ix))

  2. It satisfies the differential equation (x^2y'' + xy' - (x^2 + \nu^2)y = 0)

  3. It has the asymptotic expansion (I_\nu(x) \sim \frac{1}{\sqrt{2\pi x}} e^x) as (x \to \infty)

  4. All of the above


Correct Option: D
Explanation:

The modified Bessel function (I_\nu(x)) possesses all of the mentioned properties.

What is the value of the Gamma function at (\frac{1}{2})?

  1. $\sqrt{\pi}$

  2. $\frac{1}{\sqrt{\pi}}$

  3. $\frac{\pi}{2}$

  4. $\frac{2}{\pi}$


Correct Option: A
Explanation:

The Gamma function at (\frac{1}{2}) is equal to (\sqrt{\pi}).

Which of the following is a property of the Beta function?

  1. $\Beta(x, y) = \Beta(1-x, y)$

  2. $\Beta(x, y) = \Beta(x, 1-y)$

  3. $\Beta(x, y) = \Beta(y, 1-x)$

  4. All of the above


Correct Option: D
Explanation:

The Beta function satisfies all of the mentioned properties.

What is the value of the Hypergeometric function (_2F_1(2, 3; 4; x)) at x = 1?

  1. 0

  2. 1

  3. 2

  4. 3


Correct Option: B
Explanation:

The Hypergeometric function (_2F_1(2, 3; 4; x)) at x = 1 is equal to 1.

Which of the following is a property of the Legendre polynomials?

  1. They are orthogonal on the interval ([0, 1])

  2. They satisfy the differential equation ((1-x^2)y'' - 2xy' + n(n+1)y = 0)

  3. They are complete on the interval ([0, 1])

  4. All of the above


Correct Option: D
Explanation:

Legendre polynomials possess all of the mentioned properties.

What is the order of the Bessel function (Y_\nu(x))?

  1. $\nu$

  2. $\nu+1$

  3. $\nu-1$

  4. $\nu+2$


Correct Option: A
Explanation:

The order of the Bessel function (Y_\nu(x)) is (\nu).

Which of the following is a property of the modified Bessel function (K_\nu(x))?

  1. It is related to the Bessel function (J_\nu(x)) by (K_\nu(x) = \frac{\pi}{2} i^{\nu+1} H_\nu^{(1)}(ix))

  2. It satisfies the differential equation (x^2y'' + xy' - (x^2 + \nu^2)y = 0)

  3. It has the asymptotic expansion (K_\nu(x) \sim \sqrt{\frac{\pi}{2x}} e^{-x}) as (x \to \infty)

  4. All of the above


Correct Option: D
Explanation:

The modified Bessel function (K_\nu(x)) possesses all of the mentioned properties.

What is the value of the Gamma function at (\frac{3}{2})?

  1. $\frac{\sqrt{\pi}}{2}$

  2. $\frac{2}{\sqrt{\pi}}$

  3. $\frac{\pi}{2}$

  4. $\frac{3\sqrt{\pi}}{2}$


Correct Option: A
Explanation:

The Gamma function at (\frac{3}{2}) is equal to (\frac{\sqrt{\pi}}{2}).

Which of the following is a property of the Beta function?

  1. $\Beta(x, y) = \Beta(x+1, y-1)$

  2. $\Beta(x, y) = \Beta(x-1, y+1)$

  3. $\Beta(x, y) = \Beta(y+1, x-1)$

  4. All of the above


Correct Option: D
Explanation:

The Beta function satisfies all of the mentioned properties.

What is the value of the Hypergeometric function (_2F_1(3, 4; 5; x)) at x = 0?

  1. 0

  2. 1

  3. 2

  4. 3


Correct Option: B
Explanation:

The Hypergeometric function (_2F_1(3, 4; 5; x)) at x = 0 is equal to 1.

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