142 results for "present".
-
Question in Demos
The student must make a spanning tree of the complete graph $K_5$. They can tick boxes to include or exclude edges, or toggle them by clicking on a visual representation of the graph.
-
Question in Linear Algebra 1st year
Checking whether a given set is a plane or not. Depends on whether two vectors are parallel or not. Then checking whether the plane goes through the origin. This is not always obvious from the presentation.
Not randomised because it's the same as in our workbook.
-
Question in Linear Algebra 1st year
Checking whether a given set is a plane or not. Depends on whether two vectors are parallel or not. Then checking whether the plane goes through the origin. This is not always obvious from the presentation.
Not randomised because it's the same as in our workbook.
-
Question in Linear Algebra 1st year
Checking whether a given set is a plane or not. Depends on whether two vectors are parallel or not. Then checking whether the plane goes through the origin. This is not always obvious from the presentation.
Not randomised because it's the same as in our workbook.
-
Question in Engineering Statics
Given the specifications of two vectors, draw the parallelogram representing their sum, then estimate length of the diagonal.
-
Question in Demos
The letters i, j and k are used to represent the standard 3D unit vectors.
-
Question in Demos
In this question, $\tau$ represents the ratio of a circle's radius to its circumference, or $2\pi$.
-
Question in Elena's workspace
A random graph is drawn and students are asked whether it represents a function or not.
-
Question in How-tos
Because JavaScript numbers lose precision as they get bigger, you get some unexpected results.
See the variable "two" - the difference should be 2, but because the JavaScript representation of each of the two numbers is the same, it thinks the difference is 0.
Using the decimal data type, there's no loss of precision, so the correct value is produced.
-
Question in Binary Text
How many bits are needed to represent a character in ascii?
-
Question in Patricia's workspaceFinancial maths. Present value of an ordinary annuity.
-
Question in How-tos
The student is given a value of $\cos(\theta)$ and has to find $\theta$.
Shows how to use subexpressions to represent randomly-chosen fractions of $\pi$ and surds, and have them displayed nicely.
-
Exam (10 questions) in Real Estate On-line Study Resource
No description given
-
Question in Bill's workspace
Given a population size and data on a test for a condition on that population, use a tabular approach to find the increase in risk after a positive test in which there is a small chance of a false positive i.e. the probability that the test is positive even though the condition is not present. See Advice for a graphical version.
-
Question in Bill's workspace
Asking users to input coefficients of a system of diff equations so that the phase space is a centre. All systems input by the user are graphed together with immediate feedback. Also included in the Steps are the graphs of the solutions for $x(t),\; y(t);\; x(0)=-5,\;y(0)=5.$
-
Question in Bill's workspace
Nature of fixed points of a 2D dynamical system.
These examples are either centres or spirals.
-
Question in Standard Maths
A bill (for a random amount) is divided equally between a number of people.
Students evaluate the per-person cost for a random number of people.
They then complete a table showing the cost per person for various numbers of people.
Finally they are asked to identify the shape of the graph that represents this function. They are given 2 exponentials, a hyperbola and a line to choose from.
-
Question in Adelle's workspace
A simple situational question about a box of chocolates, asking how many of each type there are, what percentage of the box they represent, the probability of picking one and ratios of different types.
-
Question in Bill's workspace
Find $\displaystyle \int \frac{c}{\sqrt{a-bx^2}}\;dx$. Solution involves the inverse trigonometric function $\arcsin$.
-
Question in Bill's workspace
Rotate $y=a(\cos(x)+b)$ by $2\pi$ radians about the $x$-axis between $x=c\pi$ and $x=(c+2)\pi$. Find the volume of revolution.
-
Question in Roberto's workspace
Numbas representation of the Metacentric Height fluid mechanics laboratory for first year Engineering students.
Students should answer this question after completing the laboratory and the associated Excel template, including the relevant plots.
The first question tests their capacity to correctly calculate metacentric heights, the remaining questions evaluate their graph interpretation skills.
-
Question in CHY1201 - Spectroscopy
Question requires students to interchange units of Hz with MHz, GHz, THz. Question is not very efficient at present- frequencies spanning many orders of magnitude are generated by variables in a clumsy way. Could be improved by having frequency generated by a 10^((random(1000..4000)/1000) variable instead, for example.
-
Exam (3 questions) in How-tos
These questions show how to use JSON data to represent structured information.
-
Question in Content created by Newcastle University
Find angle between plane $\Pi_1$, given by three points, and the plane $\Pi_2$ given in Cartesian form.
The calculation of $cos(\alpha)$ at the end of Advice has fractionNumbers switched on and so the result is presented as a fraction, which can be misleading. Best if calculation is followed through without using fractionNumbers.
-
Question in Content created by Newcastle University
Calculation of the length and alternative form of the parameteric representation of a curve, involving trigonometric functions.
-
Question in Content created by Newcastle University
Calculation of the length and alternative form of the parameteric representation of a curve.
-
Question in Content created by Newcastle University
Cartesian form of the parametric representation of a surface, normal vector, and magnitude.
-
Question in Content created by Newcastle University
Find the cosine of the angle between two pairs of 3D and 4D vectors.
The calculations and answers are correct, however the Advice should display the interim calculations of the lengths of vectors and their products to say 6dps. At present the student may be mislead into using 2dps at each stage - the instruction at the start of Advice is somewhat confusing.
-
Question in Content created by Newcastle University
Cartesian form of the parametric representation of a surface, normal vector, and magnitude.
Accuracy for part c) should be made more stringent as can be marked correct for an incorrect answer. Use a different sample range rather than 0 to 1 would help as would setting accuracy to something less than 0.001.
-
Question in Content created by Newcastle University
Find the unit vector parallel to a given vector.
Interim calculations in Advice should be presented in enough accuracy to ensure that the final calculations are to 3dps.