## C3 COURSEWORK ERROR BOUNDS

I have established that the root lies between The content of this handout is simply what I have done recently. In general, equations with no roots should not be used as examples of failure. Adding a second equation to the list will graph that equation on the same axes as the first. One way of identifying cubic and higher order equations that do not have an analytical solution is to look for associated graphs that cross the x-axis at non-rational values.

When drawing a graph by hand you would mark the axes in a similar way, but would also write -2, -1, 0, 1, 2, etc on the axes to remind you. Your coursework uses three methods and ideally you should choose equations where the associated graph is going to cross the x-axis 2 or 3 times. For complaints, use another form. Do I say that the solution is They do need to make clear to the assessor what hardware and software they have used.

This is helpful to them, as they can check that everything is included; to you, as you can see where they think it is, if it is bouhds immediately apparent; and also to the moderator. Hello, I am doing this coursework and I am a little bit unsure about how to state my error for decimal search.

Right-clicking the mouse This operation gives several additional menu options, especially once one or more curves have been selected. Half marks may be awarded, but the overall total must be an integer so the assessor must make the decision to round up or down.

Where analytical methods are possible, they are preferable because they give an exact solution.

# C3 COURSEWORK – comparing methods of solving functions – A-Level Maths – Marked by

You may also return to the default axes you started off with the button just to the left of the degrees button. You must not choose any quadratics, since all quadratic equations can be solved by factorising or using the quadratic formula.

The buttons to the right of these enable zooming in or out in the x or y directions only. For complaints, use another form. Any list provided should be sent with the scripts to hounds external moderator. It often takes several attempts to find equations for coursework that satisfy all the criteria.

You will be very lucky if the first five functions you think of are all suitable. Bristol Business School Academic Year: The coursework assessment sheet is both detailed and prescriptive and should be issued to students as they start their coursework.

Now perform the graph-drawing exercise for your functions, exactly as you did for the five functions you were given. A good starting range for most polynomials that you will want to graph is: Thanks in advance for any help, BF. In fact, in your case I would say it’s more sensible if you’re doing the change of sign method to say it’s Centres may provide students with a list of at least ten equations from which they can, if they wish, select those they are going to use, but any list must be forwarded to the moderator with the sample and changed for each examination session.

We allow our students to use either. There is an illustrated example of why this is the case.

These numbers are not on the calculator axes, so it is best to choose a scale that you will remember easily. Points to be aware of when assessing C3 Coursework: Or can I say drror it is From the graph above, you can see that there are three roots in the interval considered, together with their approximate positions.

## MEI C3 COURSEWORK STRUCTURED MATHEMATICS

For an equation to be non-trivial it must pass two tests: Similarly, quartics crossing the x-axis at two integer values are excluded. An example is boumds of an equation where this method fails to find a particular root, despite a starting value close to it. To set the ranges that you want on the axes, press Shift F3 VWindow and amend accordingly. Hmm I’ve written an essay, can you tell I’ve been marking 20 of these this week? Suggest us how to improve StudyLib For complaints, use another form.

# MEI C3 COURSEWORK STRUCTURED MATHEMATICS

It therefore emphasises just how quickly this method converges Appendix 3 for starting instructions. Yes, my password is: What you need to find now are equations that do not factorise. This is useful for simultaneous equations, but for this exercise you only want one equation on the screen at a time.

Domain Change of sign method 3 Mark Description doursework The method is applied successfully to find one root of an equation.