24 results for "free".
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Question in Thermodynamics for Chemistry
Public
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Question in Thermodynamics for Chemistry
Public
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Question in Thermodynamics for Chemistry
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Question in Thermodynamics for Chemistry
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Question in Thermodynamics for Chemistry
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Question in Thermodynamics for Chemistry
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Chemical Thermodynamics: Equilibrium Partial Pressures from Gibbs Free Energy of Formation Ready to useQuestion in Thermodynamics for Chemistry
Public
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Homework set. Identify student errors when drawing free body diagrams.
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Identify errors in student-drawn free body diagrams of a frame.
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Identify errors in student-drawn free body diagrams of a rigid body.
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Identify errors in student-drawn free body diagrams of a rigid body.
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Question in Using JSXGraph in Numbas - JSXGraph conference 2021 by
Christian Lawson-Perfect
and 4 others
Solving 2nd order differential equation for pendulum, with and without damping.
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Solving a system of three linear equations in 3 unknowns using Gaussian Elimination (or Gauss-Jordan algorithm) in 5 stages. Solutions are all integers. Set up so that sometimes it has infinitely many solutions (one free variable), sometimes unique solution. Scaffolded so meant for formative. The variable d determines the cases (d=1: unique solution, d-0: infinitely many solutions). The other variables are set up so that no entries become zero for some randomisations but not others.
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Give the student a larger area to write some free-form text, which isn't marked.
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Solving 2nd order differential equation for pendulum, with and without damping.
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A custom marking algorithm picks out the names of the constants of integration that the student has used for the cos and sin terms in their answer, and replaces them with A and B respectively, before comparing with the correct answer. This way, the student is free to choose the names for their constants of integration.
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This question uses the linear algebra extension to generate a system of linear equations which can be solved.
We want to produce an equation of the form Ax=y, where A and y are given, and x is to be found by the student.
First, we generate a linearly independent set of vectors to form A, then freely pick the value of x, and calculate the corresponding y.
To generate A, we generate more vectors we need, then pick a linearly independent subset of those using the
subset_with_dimensionfunction. -
This is supposed to demonstrate allowing one of two different free variables in the student's answer, but only marked as correct if the same free variable is used in all gaps. The custom marking algorithm should extend to any number of gaps, and one could add more alternative answers to allow for more free variable names. It doesn't allow just any free variable name.
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Question in Content created by Newcastle University by
Newcastle University Mathematics and Statistics
and 1 other
Given a 3x3 matrix with very big elements, perform row operations to find a matrix with single-digit elements. Then reduce that to an upper triangular matrix, and hence find the determinant.
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Question in Deactivated user's workspaceIdentify errors in student-drawn free body diagrams of a frame.
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Question in Katrin's workspaceIdentify errors in student-drawn free body diagrams of a frame.
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Question in Ian's workspaceIdentify errors in student-drawn free body diagrams of a frame.
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Differentiate the function f(x)=(a+bx)menx using the product rule. Find g(x) such that f′(x)=(a+bx)m−1enxg(x).
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Differentiate the function f(x)=(a+bx)menx using the product rule. Find g(x) such that f′(x)=(a+bx)m−1enxg(x).
