### MEI DIFFERENTIAL EQUATIONS COURSEWORK MARK SCHEME

Half marks may be awarded, but the overall total must be rounded up or down to an integer. Remember me on this computer. Unless otherwise indicated, marks once gained cannot subsequently be lost, eg wrong working following a correct form of answer is ignored. Often this went astray, resulting in a loss of three marks. The total time allowed is 1 hour 30 minutes. Solve your equations to find the possible values of a and r. A number of candidates wasted time by trying to find the numerical value of a.

Write down two equations in a and r, where a is the first term and r is the common ratio. Calculate the area of the segment. However, Centres which are new to the scheme are strongly recommended to use the tasks published by MEI while they are familiarising themselves with the nature of coursework. One mark is available for each criterion statement. Small variations in the degree of accuracy to which an answer is given e.

Candidates are expected to give numerical answers to an appropriate degree of accuracy, with 3 significant figures often being the norm.

Give your answer correct to 3 decimal places. The situation regarding any particular cases where the accuracy of the answer may be a marking issue should be detailed in the mark scheme rationale.

Mathematics in Education and Industry MEI MEI is committed to improving mathematics education and promotes teaching and learning dcheme different strands of activity. Relevant knowledge of complex numbers will also be required.

## A-level Mathematics/MEI/DE

The A, M and B annotations must be used on your standardisation scripts for responses that are not awarded either 0 or full marks. Log In Sign Up. Therefore M0 A1 cannot ever be awarded. Most plotted the points adequately and drew a single ruled line of best fit across the whole range of x-values to earn two marks. Some candidates worked in degrees and then worked with rounded numbers, often following on to over specify their answer and lose the final mark.

Candidates are expected to know the content of C1, C2, C3 and C4. Sometimes this is reinforced in the mark scheme by the abbreviation isw. The assessor decides on diffrrential appropriate sheet according to the way the candidate has approached the particular task. Accuracy marks cannot be given unless the associated Method mark is earned or implied.

Strangely many candidates stopped there, or subtracted From Wikibooks, open books for an open world.

Some candidates rounded off their calculator value, and then over-specified their final values Question 7 Most candidates wrote down the required equations, and most went on to schdme one of the variables correctly.

Question 10 Most candidates understood the initial step, but many omitted the brackets and never recovered. A Accuracy mark, awarded for a correct answer or intermediate step correctly obtained.

Make sure you know what you have to do before starting your answer. Unfortunately, many of them failed to score, in spite of their likely truth, as they were vague or missed the point. The total diffsrential available for coursework is Question 13 Part i Wrong working often spoiled a correct final answer in this question.

# A-level Mathematics/MEI/DE – Wikibooks, open books for an open world

It would seem that a significant minority did not connect this part with earlier parts of the question. C3 download ocr mei c3 coursework the student room pdf download as a level gce mathematics. A segment of the circle is shown shaded in Fig. Centres are advised that using a graphical calculator to evaluate a definite integral or to solve an equation eg question 10 will earn no credit unless the relevant working is presented. Some candidates slipped up finding the value of y, and a few made sign errors when finishing off.

## mei ocr maths coursework

This page was last edited on 24 Septemberat This is produced for each series of examinations and is freely available to download from our public website www. Only a few candidates failed to show sufficient detail of their working to earn the third mark following a fully correct.

A few candidates made errors in the eifferential — usually the first or the penultimate value. In such cases, exactly what is acceptable will be detailed in the mark scheme rationale.

This usually requires more working or explanation than the establishment of an unknown result. Unless otherwise specified the value of the acceleration due to gravity should be taken to be exactly 9.

NB Follow these maths-specific instructions rather than those in the assessor handbook.