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### History

#### Checkpoint description

Describe what's changed since the last checkpoint.

Published this.

#### Christian Lawson-Perfect3 years ago

Gave some feedback: Ready to use

#### Christian Lawson-Perfect3 years ago

Saved a checkpoint:

I've changed the last part to a "choose several from a list" type, because it makes more sense.

I've also reworded the advice a bit.

#### Hannah Aldous3 years ago

Gave some feedback: Needs to be tested

#### Christian Lawson-Perfect3 years ago

Gave some feedback: Has some problems

#### Christian Lawson-Perfect3 years ago

Do each of the subparts assess different things? If not, you might as well just have one of each - the student can click "try another question" if they want more.

The advice for part c doesn't show how to enter the answer. Students can't type $\sqrt[4]{x}$, so you need to say something like, "enter this as x^(1/4)", or add a line "$= x^{1/4}$" to the end of the working-out.

I'm not keen on the sudden appearance of $n$ in the advice for part d! I think you're just shuffling things around to show what you've already been given. The expressions you have to resolve are all just stock identities, so I don't think there's anything to explain.

#### Hannah Aldous3 years ago

Gave some feedback: Needs to be tested

#### Hannah Aldous3 years ago

Gave some feedback: Has some problems

#### Stanislav Duris3 years ago

- There is a typo in the question statement (logaTrithms).
- There should be a blank space before a Gap in all parts like you did in part b.ii) so it looks neater.
- In part c), the answer x= isn't in LaTeX as it should ($x=$).
- I feel like in part d), it would be nice to specifically state you need to choose one from each row, without it maybe some students may get confused and they may possibly only pick one from each column.

- In Advice part b) in ii), the expression that follows after "And our equation as,..." is the correct answer for part i), not part ii). You may just need to change your variables in this expression in your code for advice to variables from part ii).
- In part c), you refer to part b). I think it should say part b) with the bracket instead of just part b. Also, are you sure you want 1 to be a possible value of variable h2? It is completely up to you but I just find " $x = \sqrt[1]{a}$ " a bit confusing as the last line of the solution when h2 = 1.
- In part d), "Evaluating $e^{\lnx}$," should be "Evaluating $e^{\ln(x)}$," - you need to add brackets around x in \lnx. Hope this helps.

#### Hannah Aldous3 years, 1 month ago

Gave some feedback: Needs to be tested

#### Chris Graham3 years, 1 month ago

Gave some feedback: Has some problems

#### Chris Graham3 years, 1 month ago

$\log$ should be roman, rather than $log$ and the there's actually a command \log that you can use. Similarly with $\ln$, use \ln.

The statement could be used to offer an introduction to the topic (changing the subject of a an equation with logs).

In the advice, for completeness I think you should include all of the solutions. If you don't want to include the same amount of detail, because there is nothing new to explain, then you could say "Similarly, ..." followed by one-line solutions.

In (d) you reference i),ii)..., but this numbering is not used in the question itself. You also give out some definitions which are required. These should be placed into a step to give the student an opportunity to glean this information when they are attempting the question.

#### Hannah Aldous3 years, 1 month ago

Gave some feedback: Needs to be tested

#### Hannah Aldous3 years, 1 month ago

Created this.
Name Status Author Last Modified
Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ Ready to use Hannah Aldous 20/11/2019 14:45
Inbbavathie's copy of Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Inbbavathie Ravi 24/07/2017 03:49
Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Adrian Jannetta 24/08/2017 14:39
Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ Ready to use Ida Landgärds 09/05/2018 06:55
spørsmål 2 draft Ida Landgärds 20/06/2018 07:46
Logarithms [L6] draft Abbi Mullins 24/07/2018 14:52
David's copy of Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft David Martin 30/07/2018 14:34
Algebra: Log to Index Form Doesn't work Clare Lundon 31/10/2019 14:11
Algebra: Index to Log Form draft Clare Lundon 26/10/2018 14:08
Harry's copy of David's copy of Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Harry Flynn 15/11/2018 10:33
Basic Algebra : Log draft Johnny Yi 23/01/2019 05:00
Maria's copy of Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Maria Aneiros 29/05/2019 06:58
Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Xiaodan Leng 11/07/2019 00:16
Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Xiaodan Leng 11/07/2019 01:47
Katy's copy of Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ Ready to use Katy Dobson 20/09/2019 15:12
Paul's copy of Inbbavathie's copy of Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Paul Verheyen 17/04/2020 12:54
W2b - Logarithms basics Ready to use Timur Zaripov 10/10/2019 12:15
Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Marie Nicholson 08/10/2019 16:00
Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Marie Nicholson 08/10/2019 12:41
claire's copy of Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft claire lines 27/04/2020 13:50
claire's copy of Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft claire lines 27/04/2020 14:50
Ahmed's copy of Using the Logarithm Equivalence $\log_ba=c \Longleftrightarrow a=b^c$ draft Ahmed Al-Razaz 19/05/2020 00:34
ALG Equivalencia log = exp $\log_ba=c \Longleftrightarrow a=b^c$ draft David Vanegas 05/06/2020 02:25

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