Mathematics · May / June 2024 · Paper 21 · Question 3
YMA01
As printed in the paper
The question as text
3. In this question you must show all stages of your working. Solutions relying entirely on calculator technology are not acceptable.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
3(i)[5]
x
x
2
2
(
)
(
)
2log
2
−
→
log
2
−
2
4
log 16
One correct log law
x
x
or
→
2
2
2
Correct attempt to combine two terms
Correct equation (not involving logs) E.g. (
2
)
2
16
(
10
)
−
x
=
x
+
2
(
)(
)
x
−
20
x
−
156
=
0
+
6
−
26
=
0
x
x
x = − only
6
3(ii)[1]
12
(i)
B1:
One correct log law seen or used in relation to the equation e.g.
2log ...
→
2
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.