{ "cells": [ { "cell_type": "markdown", "metadata": {}, "source": [ "# Mechanica" ] }, { "cell_type": "markdown", "metadata": {}, "source": [ "\n", "### Quiz Notations and Products\n", "\n", ":::{card} Exercise 1\n", "What is the type of the result of the product?\n", "\n", "$\\mathit{v}_i \\cdot \\mathit{A}_{ij} \\cdot \\mathit{w}_j$\n", "\n", "\n", "```{admonition} Solution\n", ":class: tip, dropdown\n", "Scalar\n", "```\n", ":::\n", "\n", ":::{card} Exercise 2\n", "How would you write the product\n", "\n", "$\\mathit{v}_i \\cdot \\mathit{A}_{ij} \\cdot \\mathit{w}_j$\n", "\n", "in matrix/vector notation?\n", "```{admonition} Solution\n", ":class: tip, dropdown\n", "$\\mathbf{v}^T \\cdot \\mathbf{A} \\cdot \\mathbf{w}$\n", "```\n", ":::\n", "\n", ":::{card} Exercise 3\n", "What is the type of the result of the following product?\n", "\n", "$\\mathit{v}_i \\cdot \\mathit{w}_j$\n", "```{admonition} Solution\n", ":class: tip, dropdown\n", "Second order tensor\n", "```\n", ":::\n", "\n", ":::{card} Exercise 4\n", "How would you write the product\n", "\n", "$\\mathit{A}_{ij} \\cdot \\mathit{v}_{i}$\n", "\n", "in matrix vector notation?\n", "```{admonition} Solution\n", ":class: tip, dropdown\n", "$\\mathbf{A}^T \\cdot \\mathbf{v}$\n", "```\n", ":::\n", "\n", ":::{card} Exercise 5\n", "How would you write the result of the product\n", "\n", "$\\mathit{v}_{i} \\cdot \\mathit{w}_{j}$\n", "\n", "in matrix vector notation?\n", "```{admonition} Solution\n", ":class: tip, dropdown\n", "$\\mathbf{v} \\cdot \\mathbf{w}^T$\n", "```\n", ":::\n", "\n", ":::{card} Exercise 6\n", "How would you write the product\n", "\n", "$\\mathbf{A} \\cdot \\mathbf{B}^T$\n", "\n", "in index notation?\n", "```{admonition} Solution\n", ":class: tip, dropdown\n", "$\\mathit{A}_{ik} \\cdot \\mathit{B}_{jk}$\n", "```\n", ":::" ] }, { "cell_type": "markdown", "metadata": {}, "source": [] } ], "metadata": { "kernelspec": { "display_name": "Python 3", "language": "python", "name": "python3" }, "language_info": { "codemirror_mode": { "name": "ipython", "version": 3 }, "file_extension": ".py", "mimetype": "text/x-python", "name": "python", "nbconvert_exporter": "python", "pygments_lexer": "ipython3", "version": "3.8.0" }, "widgets": { "application/vnd.jupyter.widget-state+json": { "state": {}, "version_major": 2, "version_minor": 0 } } }, "nbformat": 4, "nbformat_minor": 4 }