47 results for "valid".
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Question in How-tos
In the first part, the student must write any linear equation in three unknowns. Each distinct variable can occur more than once, and on either side of the equals sign. It doesn't check that the equation has a unique solution.
In the second part, they must write three equations in two unknowns. It doesn't check that they're independent or that the system has a solution. The marking algorithm on each of the gaps just checks that they're valid linear equations, and the marking algorithm for the whole gap-fill checks the number of unknowns.
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Question in Engineering Statics
Two known forces, and a third with known magnitude act on a rigid body. Apply $\Sigma M = 0$ about a pin restraint to determine the direction of the third force. The problem has two valid answers.
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Question in Musa's workspace
Recovering original function given some information such as derivative and value at some point.
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Question in Standard Maths
Students are shown a graph of the value of a machine over time. The line equation is randomised.
They are asked to evaluate value at a given time, and the time at which a given value is reached. They are asked when the machine has no value, and the range of times over which the model is valid. They are also asked to explain the physical meaning of the gradient.
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Question in Standard Maths
The student is shown an exponential graph and asked to evaluate the function at some given value.
They are also asked whether or not the model is valid for all real inputs, but they only give a yes/no response. The reasoning is explained in the advice but is not required from students.
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Question in Content created by Newcastle University
Two questions testing the application of the Sine Rule when given two angles and a side. In this question, the triangle is always acute.
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Question in Content created by Newcastle University
Two questions testing the application of the Cosine Rule when given two sides and an angle. In these questions, the triangle is always acute and both of the given side lengths are adjacent to the given angle.
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Question in Julia Goedecke's contributions
Educational calculation tool rather than "question".
This allows the student to input a square matrix (max rows 5). Then the student can decide to swap some rows, or multiply some rows, or add multiples of one row to other rows. The student only has to input what operation should be performed, and this is automatically applied to the matrix and the identity matrix (or what it has got to). This question has no marks and no feedback as it's just meant as a "calculator". It has some checks in so students know when they are not entering a square matrix or a valid row number etc.
It has some rounding to 13 decimal places, as otherwise some fraction calculations become incorrectly displayed as a very small number instead of 0.
It would be possible to extend to more than 5 rows, one just has to put in a lot more variables and so on. I just had to choose some place to stop.
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Question in Linear Algebra 1st year
Abstract linear combinations. "Surreptitious" preview of bases and spanning sets, but not explicitely mentioned. There is no randomisation because it is just an abstract question. For counter-examples, any valid counter-example is accepted.
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Question in Linear Algebra 1st year
Abstract linear combinations. "Surreptitious" preview of bases and spanning sets, but not explicitely mentioned. There is no randomisation because it is just an abstract question. For counter-examples, any valid counter-example is accepted.
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Question in How-tos
One way of checking an equation is valid is to check that the difference between the LHS and RHS is 0.
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Question in Marie's Logic workspace
Determine if an argument is valid or not.
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Question in Marie's Logic workspace
Determine if an argument is valid or not.
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Question in Marie's Logic workspace
Asks to determine whether or not 6 arguments are logically valid or not.
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Question in Marie's Logic workspace
Determine if an argument is valid or not.
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Question in Marie's Logic workspace
Determine if an argument is valid or not.
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Question in Marie's Logic workspace
Determine if an argument is valid or not.
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Question in Marie's Logic workspace
Determine if an argument is valid or not.
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Question in How-tos
To prevent students from giving a trivial answer for a part which is used later in adaptive marking, you can consider it as invalid.
Part a of this question has a custom marking algorithm which marks an answer of zero as invalid. Any other answer is used in adaptive marking for part b.
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Exam (5 questions) in COM281
Set of matrices exercises for knowledge validation. Topics covered:
- Matrix Addition and Subtraction
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Question in Bill's workspace
Multiplication of complex numbers. Four parts.
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Question in Bill's workspace
Inverse and division of complex numbers. Four parts.
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Question in DemosThis question demonstrates how to lock a part in explore mode after moving to the next part, to prevent the student changing their answer and invalidating the rest of the question.
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Question in Content created by Newcastle University
(Green’s theorem). $\Gamma$ a rectangle, find: $\displaystyle \oint_{\Gamma} \left(ax^2-by \right)\;dx+\left(cy^2+px\right)\;dy$.
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Question in Content created by Newcastle University
A question testing the application of the Cosine Rule when given three side lengths. In this question, the triangle is always acute. A secondary application is finding the area of a triangle.
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Question in Content created by Newcastle University
Two questions testing the application of the Sine Rule when given two sides and an angle. In this question, the triangle is always acute and one of the given side lengths is opposite the given angle.
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Question in MY QUESTIONS
Multiplication and addition of complex numbers. Four parts.
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Question in Algebra Mat140
Inverse and division of complex numbers. Four parts.
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Exam (5 questions) in Mathematical Logic
A collection of questions (frequently updated) to demonstrate the usage of the Logic extension.
Current questions:
- Make syllogisms (either valid, invalid or valid under an additional assumption);
- Write statements in Polish and reverse Polish notation, find the truth table, determine satisfiability;
- Test whether a collection of statements $\Gamma$ models a statement $\phi$;
- Write the Disjunctive and Conjunctive Normal Forms for a statement.
Needs the Logic Extension!
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Question in Complex
Inverse and division of complex numbers. Four parts.