Search - Numbas at mathcentre.ac.uk

105 results.

Evaluation of Formulae
Draft
Question in DIAGNOSYS by Christian Lawson-Perfect and 3 others

No description given
Factorising a Quadratic Function
Draft
Question in DIAGNOSYS by Christian Lawson-Perfect and 3 others

No description given
Quadratic regression
Draft
Question in Bill's workspace by Bill Foster

The data is fitted by linear and quadratic regression. First, find a linear regression equation for the $n$ data points, $20 \le n \le 35$ .

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.
Julie's copy of Second order differential equations 1
Draft
Question in Julie's workspace by Julie Crowley

Solve: $\displaystyle \frac{d^2y}{dx^2}+2a\frac{dy}{dx}+(a^2+b^2)y=0,\;y(0)=1$ and $y'(0)=c$ .

rebelmaths
Julie's copy of Second order differential equations 2
Draft
Question in Julie's workspace by Julie Crowley

Method of undermined coefficients:

Solve: $\displaystyle \frac{d^2y}{dx^2}+2a\frac{dy}{dx}+a^2y=0,\;y(0)=c$ and $y(1)=d$ . (Equal roots example). Includes an interactive plot.

rebelmaths
Using the Quadratic Formula to Solve Equations of the Form $ax^2 +bx+c=0$
Ready to use
Question in Transition to university by Hannah Aldous and 1 other

Apply the quadratic formula to find the roots of a given equation. The quadratic formula is given in the steps if the student requires it.
Identifying different types of sequences
Should not be used
Question in Transition to university by Hannah Aldous and 1 other

Differentiate between linear and quadratic sequences and arithmetic and geometric sequences through a series of multiple choice questions. Spot different patterns in sequences like the triangle sequence, square sequence and cubic sequence and then use this pattern to find the next three terms in each of the sequences.
Yuriy's copy of Graph of a quadratic function
Ready to use
Question in Yuriy's workspace by Yuriy Rogovchenko

Compute a table of values for a quadratic function. A JSXgraph plot shows the curve going through the entered values.
Tony's copy of José's copy of Phil's copy of Graph of a quadratic function
Ready to use
Question in Tony's workspace by Tony Zerrer

Compute a table of values for a quadratic function. A JSXgraph plot shows the curve going through the entered values.
prueba --- gráfico
Ready to use
Question in AP's workspace by AP MAT

Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
Q9 - Coordinate geometry: line and parabola
Ready to use
Question in David's workspace by David Rickard

Compute a table of values for a quadratic function. Calculate the slope and intercept of a line.
Q9 - Coordinate Geometry, Line and Parabola
Ready to use
Question in David's workspace by David Rickard

Compute a table of values for a quadratic function. The student input is now disconnected from the graph so that they slide the points on the graph after they input the values and the answer fields are not updated. Now includes a graph in advice.
Ricardo's copy of Graph of a quadratic function
Ready to use
Question in Ricardo's workspace by Ricardo Monge

Compute a table of values for a quadratic function. A JSXgraph plot shows the curve going through the entered values.
Plot the graph of a quadratic function
Ready to use
Question in Jessica's workspace by Jessica Ryan

Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
Phil's copy of Graph of a quadratic function
Ready to use
Question in Phil's workspace by Phil Barker

Compute a table of values for a quadratic function. A JSXgraph plot shows the curve going through the entered values.
José's copy of Phil's copy of Graph of a quadratic function
Ready to use
Question in Jos's workspace by Jos Klenner

Compute a table of values for a quadratic function. A JSXgraph plot shows the curve going through the entered values.
Julie's copy of Q9 - Coordinate Geometry, Line and Parabola
Ready to use
Question in Julie's workspace by Julie Crowley

Compute a table of values for a quadratic function. The student input is now disconnected from the graph so that they slide the points on the graph after they input the values and the answer fields are not updated. Now includes a graph in advice.
Julie's copy of Plot the graph of a quadratic function
Ready to use
Question in Julie's workspace by Julie Crowley

Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
Graph solution
Ready to use
Question in Phil's workspace by Phil Barker

Drag points on a JSXgraph plot to sketch solution
Función Cuadrática
Ready to use
Question in AP's workspace by AP MAT

Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
Graph of a quadratic function with solution.
Ready to use
Question in Bill's workspace by Bill Foster

Compute a table of values for a quadratic function. The student input is now disconnected from the graph so that they slide the points on the graph after they input the values and the answer fields are not updated. Now includes a graph in advice.
Cubic graph
Ready to use
Question in joshua's workspace by joshua boddy

Compute a table of values for a cubic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
Bill's copy of jean's copy of Graph of a quadratic function
Ready to use
Question in Bill's workspace by Bill Foster

Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
Escalera (Volumen) V2.0
Ready to use
Question in AP's workspace by AP MAT

No description given
Escalera V2.0
Ready to use
Question in AP's workspace by AP MAT

Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
AP's copy of Graph of a quadratic function
Ready to use
Question in AP's workspace by AP MAT

Compute a table of values for a quadratic function. A JSXgraph plot shows the curve going through the entered values.
AP's copy of prueba --- gráfico
Ready to use
Question in AP's workspace by AP MAT

Compute a table of values for a quadratic function. A JSXgraph (the graph paper) plot shows the curve going through the entered values. The student input is now disconnected from the graph so that they slide the points usually after they input the values and the answer fields are not updated.
Integration by partial fractions
Ready to use
Question in Bill's workspace by Bill Foster and 1 other

Factorise $x^2+bx+c$ into 2 distinct linear factors and then find $\displaystyle \int \frac{a}{x^2+bx+c }\;dx$ using partial fractions or otherwise.
Numbas demo: video
Ready to use
Question in Demos by Christian Lawson-Perfect

Customised for the Numbas demo exam

Factorise $x^2+cx+d$ into 2 distinct linear factors and then find $\displaystyle \int \frac{ax+b}{x^2+cx+d}\;dx,\;a \neq 0$ using partial fractions or otherwise.

Video in Show steps.
Logarithms: Solving equations 6
Draft
Question in Bill's workspace by Bill Foster

Solve for $x$ : $c(a^2)^x + d(a)^{x+1}=b$ (there is only one solution for this example).

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