**I am emailing a link of this to everyone on the class list every week. If you are not receiving these emails or want to have them sent to another email address feel free to email me at jpmccarthymaths@gmail.com and I will add you to the mailing list.**

## Assessment 3

Assessment 3 will be on the Wednesday of Week 9, 11 November 2015.

The following class groups will sit the assessment at 17:15 (**arrive around 17:05**):

- DNET1, WEB1, DCOM1-A

The following group will sit the assessment at 18:15 (**arrive around 18:05**)

- DCOM1-B

Keep an eye on your CIT Blackboard and email for the latest and definitive assessment information. Sections 1.6, 2.1 and 2.3 of the manual are going to be examined in Assessment 2.

## Week 7

### DCOM

We looked at equations.

### WEB/DNET

We looked at equations.

## Week 8

We will look at quadratic and simultaneous equations.

## Tutorials

At the moment we are looking at these exercises.

- DCOM1 Group A: Wednesday 09:00 in C212 (with Leonard O’Driscoll) and Thursday 09:00 in B185 (with Hannah Lordan)
- DCOM1 Group B with myself: Monday 12:00 in F1. 3 and Thursday 12:00 in B165
- DNET1 with myself: Monday 14:00 in B248 and Wednesday 15:00 in C212
- WEB1 with Ben O’Shaugnessy: Monday 16:00 in C212 and Thursday 15:00 in E7

## Study

Please feel free to ask me questions about the exercises via email or even better on this webpage.

## Student Resources

Please see the Student Resources tab on the top of this page for information on the Academic Learning Centre, etc.

## 2 comments

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November 3, 2015 at 11:59 am

StudentWould I be able to see where I made mistakes in the second assessment?

November 3, 2015 at 12:15 pm

J.P. McCarthyIn terms of exam technique your biggest problems were in parts 5, 10 and 11 i.

In question 4 you said radians was . However radians is so that

.

Note that your answer should have been less than … [-4]

In question 5 you correctly said that

.

To solve this you do as follows:

m.

You did some “voodoo moving” and got an answer of 19.15 m. You made a serious error then — -you didn’t ask yourself if your answer made sense. The hypotenuse — by definition the longest side in a right-angled-triangle — you found to be 19.15 m. Yet there was a side of length 25 m? Your answer had to be bigger than 25 m as the hypotenuse is the longest side. [-8 in total]

For question 6 you incorrectly assumed that all the sides had the same length. This is only true if all the angles are equal.

You could have used

,

on the top ‘wedge’ to find (the angles opposite the equal sides are equal so are both ):

[-12]

For question 10 you correctly calculated the length of the arc. However you forgot to add on the two radii so your answer should be 13.44 cm + 7 cm + 7 cm but you only had 13.44 cm. Perhaps you didn’t read the question properly? [-16 ]

For question 11 i. you failed to read the question properly: the answer was supposed to be given correct to the nearest whole number. Perhaps this was harsh. [-16.5]

For question 11.i you correctly find that … but not even close to . The calculator might have helped you to find

. [-17.5]

In question 12 you found the area of the circle to be but never halved this to find that the area of the semi-circle is . [-18.5].

In question 13 you rounded 3.007 to 3 to two decimal places. To two decimal places, 3.007 rounds to 3.01. [-19]

Regards,

J.P.