49 results.
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Question in Martin's workspace
This question plots a general amplitude modulated carrier signal defined by vs(t)=(VDC+Vmcos(2πfmt))cos(2πfct), where VDC is a DC offset, Vm is the message amplitude, fm is the message frequency and fc is the carrier frequency (fc=20fm in this question). The student must identify the values of VDC and Vm and enter these values into the appropriate gaps in the equation of the AM signal.
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Question in Martin's workspace
No description given
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Question in Martin's workspace
No description given
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Question in Deactivated user's workspace
Students enter equation and turning point
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Question in Deactivated user's workspace
Students enter equation and turning point
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Question in DIAGNOSYS
No description given
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Question in DIAGNOSYS
No description given
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Question in MASH Bath: Question Bank
Find the equation of a line given a point and a parallel line.
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Question in MASH Bath: Question Bank
No description given
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Question in MASH Bath: Question Bank
Find the equation of a line given a point and a parallel or perpendicular line.
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Question in DIAGNOSYS
No description given
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Question in MASH Bath: Question Bank
Calculate the length of a line segment given two points
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Question in MASH Bath: Question Bank
Drag points on an axis to plot a linear graph (integer gradient and intercept only)
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Question in MASH Bath: Question Bank
Drag points on an axis to plot a linear graph (rational gradient and intercept)
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Question in Demos
Customised for the Numbas demo exam
Motion under gravity. Object is projected vertically with initial velocity Vm/s. Find time to maximum height and the maximum height. Now includes an interactive plot.
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Question in DIAGNOSYS
No description given
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Question in DIAGNOSYS
No description given
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Question in Transition to university
An applied example of the use of two points on a graph to develop a straight line function, then use the t estimate and predict. MCQ's are also used to develop student understanding of the uses of gradient and intercepts as well as the limitations of prediction.
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Question in Bill's workspace
The data is fitted by linear and quadratic regression. First, find a linear regression equation for the n data points, 20≤n≤35.
They then are shown that the quadratic regression is often a better fit as measured by SSE. Also users can experiment with fitting polynomials of higher degree.
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Question in Julie's workspace
Given a graph of a line of the form y=ax+b where a and b are integers, find the equation of the line. The y-intercept is given.
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Question in Julie's workspace
Method of undermined coefficients:
Solve: d2ydx2+2adydx+a2y=0,y(0)=c and y(1)=d. (Equal roots example). Includes an interactive plot.
rebelmaths
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Question in joshua's workspace
Given a graph of a line of the form y=ax+b where a and b are integers, find the equation of the line. The y-intercept is given.
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Question in Transition to university
Use two points on a line graph to calculate the gradient and y-intercept and hence the equation of the straight line running through both points.
The answer box for the third part plots the function which allows the student to check their answer against the graph before submitting.
This particular example has a negative gradient.
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Question in Transition to university
Use two points on a line graph to calculate the gradient and y-intercept and hence the equation of the straight line running through both points.
The answer box for the third part plots the function, which allows the student to check their answer against the graph before submitting.
This particular example has a 0 gradient.
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Question in Transition to university
Drag points on a graph to the given Cartesian coordinates. There are points in each of the four quadrants and on each axis.
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Question in Transition to university
Use two points on a line graph to calculate the gradient and y-intercept and hence the equation of the straight line running through both points.
The answer box for the third part plots the function which allows the student to check their answer against the graph before submitting.
This particular example has a positive gradient.
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Question in How-tos
There are copious comments in the definition of the function eqnline about the voodoo needed to have a JSXGraph diagram interact with the input box for a part.
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Question in Bill's workspace
Find a regression equation.
Now includes a graph of the regression line and another interactive graph gives users the opportunity to move the regression line around. Could be used for allowing users to experiment with what they think the line should be and see how this compares with the calculated line.
Also includes an updated SSE to see how the sum of the squares of the residuals varies with the regression line.
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Question in Graphing and Polynomials
of a random cubic spline
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Question in Graphing and Polynomials
of a random cubic spline