Article Categories
- All Categories
-
Data Structure
-
Networking
-
RDBMS
-
Operating System
-
Java
-
MS Excel
-
iOS
-
HTML
-
CSS
-
Android
-
Python
-
C Programming
-
C++
-
C#
-
MongoDB
-
MySQL
-
Javascript
-
PHP
-
Economics & Finance
Articles on Trending Technologies
Technical articles with clear explanations and examples
Generate a Pseudo Vandermonde matrix of the Laguerre polynomial and x, y complex array of points in Python
To generate a pseudo Vandermonde matrix of the Laguerre polynomial, use the laguerre.lagvander2d() method in Python NumPy. The method returns a 2D pseudo-Vandermonde matrix where each element is evaluated using Laguerre polynomial basis functions at the given complex points. The method takes arrays of x and y coordinates and degree specifications to construct the matrix. The shape of the returned matrix is x.shape + (x_deg + 1) * (y_deg + 1), where the dtype matches the input arrays (complex128 for complex inputs). Syntax laguerre.lagvander2d(x, y, deg) Parameters The parameters are ? ...
Read MoreDifferentiate a Hermite series, set the derivatives and multiply each differentiation by a scalar in Python
To differentiate a Hermite series, use the hermite.hermder() method in Python. This function allows you to compute derivatives of Hermite polynomial series with customizable scaling factors. Syntax numpy.polynomial.hermite.hermder(c, m=1, scl=1, axis=0) Parameters c − Array of Hermite series coefficients. If multidimensional, different axes correspond to different variables m − Number of derivatives taken, must be non-negative (Default: 1) scl − Scalar multiplier. Each differentiation is multiplied by scl, resulting in final multiplication by scl**m (Default: 1) axis − Axis over which the derivative is taken (Default: 0) Basic Differentiation Let's ...
Read MoreDifferentiate a Hermite series with multidimensional coefficients over axis 1 in Python
To differentiate a Hermite series with multidimensional coefficients, use the hermite.hermder() method in Python. This method allows differentiation along specific axes when working with multidimensional coefficient arrays. Parameters The hermite.hermder() method accepts the following parameters − c − Array of Hermite series coefficients. For multidimensional arrays, different axes correspond to different variables m − Number of derivatives taken (default: 1). Must be non-negative scl − Scalar multiplier for each differentiation (default: 1). Final result is multiplied by scl**m axis − Axis over which the derivative is taken (default: 0) Example Let's create a ...
Read MoreDifferentiate a Hermite series with multidimensional coefficients over specific axis in Python
To differentiate a Hermite series with multidimensional coefficients, use the hermite.hermder() method in Python. This function allows you to compute derivatives along specific axes of multidimensional coefficient arrays. Syntax hermite.hermder(c, m=1, scl=1, axis=0) Parameters The hermder() method accepts the following parameters ? c − Array of Hermite series coefficients. For multidimensional arrays, different axes correspond to different variables m − Number of derivatives to take (default: 1). Must be non-negative scl − Scalar multiplier for each differentiation (default: 1). Final result is multiplied by scl**m axis − Axis along which the derivative ...
Read MoreIntegrate a Laguerre series and set the Integration constant in Python
To integrate a Laguerre series, use the laguerre.lagint() method in Python. The method returns the Laguerre series coefficients c integrated m times from lbnd along axis. At each iteration the resulting series is multiplied by scl and an integration constant, k, is added. Syntax numpy.polynomial.laguerre.lagint(c, m=1, k=[], lbnd=0, scl=1, axis=0) Parameters The function accepts the following parameters − c − Array of Laguerre series coefficients. If multidimensional, different axes correspond to different variables m − Order of integration, must be positive (Default: 1) k − Integration constant(s). If k == [] (default), ...
Read MoreIntegrate a Laguerre series and set the order of integration in Python
To integrate a Laguerre series, use the laguerre.lagint() method in Python. The method returns the Laguerre series coefficients c integrated m times from lbnd along axis. At each iteration the resulting series is multiplied by scl and an integration constant, k, is added. Syntax numpy.polynomial.laguerre.lagint(c, m=1, k=[], lbnd=0, scl=1, axis=0) Parameters The function accepts the following parameters ? c − Array of Laguerre series coefficients. If c is multidimensional, different axes correspond to different variables m − Order of integration, must be positive (Default: 1) k − Integration constant(s). If k == ...
Read MoreCompute the condition number of a matrix in linear algebra in Python
The condition number of a matrix measures how sensitive the solution of a linear system is to changes in the input. A low condition number indicates a well-conditioned matrix, while a high condition number suggests an ill-conditioned matrix. In Python, we use numpy.linalg.cond() to compute this value. Syntax numpy.linalg.cond(x, p=None) Parameters x: The matrix whose condition number is sought. p: Order of the norm used in computation (None, 1, -1, 2, -2, 'fro'). Basic Example Let's compute the condition number of a 3x3 matrix ? import numpy as np from ...
Read MoreReturn the negative infinity Norm of the matrix in Linear Algebra in Python
To return the negative infinity norm of a matrix in Linear Algebra, use the LA.norm() method with -np.inf as the order parameter. The negative infinity norm returns the minimum row sum of absolute values in the matrix. Syntax numpy.linalg.norm(x, ord=-np.inf, axis=None, keepdims=False) Parameters The key parameters for calculating negative infinity norm ? x − Input array (1-D or 2-D) ord − Order of norm. Use -np.inf for negative infinity norm axis − Axis along which to compute the norm (default: None) keepdims − Whether to keep dimensions in result (default: False) ...
Read MoreReturn the infinity Norm of the matrix in Linear Algebra in Python
The infinity norm of a matrix is the maximum row sum of absolute values. In NumPy, we use LA.norm() with np.inf parameter to calculate this norm in Linear Algebra operations. Syntax numpy.linalg.norm(x, ord=None, axis=None, keepdims=False) Parameters x − Input array (1-D or 2-D) ord − Order of the norm. Use np.inf for infinity norm axis − Axis along which to compute the norm keepdims − Whether to keep dimensions in the result Example Let's calculate the infinity norm of a 3×3 matrix ? import numpy as np from ...
Read MoreReturn the Norm of the vector over given axis in Linear Algebra in Python
The norm of a vector or matrix measures its magnitude or size. In NumPy, you can calculate various types of norms using numpy.linalg.norm(), including vector norms along specific axes. Syntax numpy.linalg.norm(x, ord=None, axis=None, keepdims=False) Parameters x: Input array (vector or matrix) ord: Order of the norm (default is 2-norm) axis: Axis along which to compute the norm keepdims: Whether to keep dimensions in the result Basic Vector Norm Example Let's start with calculating the norm of a simple vector ? import numpy as np from numpy import linalg as LA ...
Read More