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junior college 1 | H2 Maths
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immanlyn
Immanlyn

junior college 1 chevron_right H2 Maths chevron_right Singapore

pls help me w this qn thanks !!

Date Posted: 4 years ago
Views: 258

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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
1st
Q15ai, Q15aii
Eric Nicholas K
Eric Nicholas K
4 years ago
Sorry, for part ii, it's n years, not 20 years.

Working on part iii now.

As for part b, I do not quite understand the "theoretical maximum total interest payable" part. This could mean one of the following cases.

1. Interest halved every year, but no withdrawals made

2. Interest not halved for the same withdrawal rate

3. Interest not halved AND interest not withdrawn
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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
Q15aiii; The graph at the end is plotted somewhere on a graphing calculator or software and then we look for the regions where the graph is below the k-axis; we should get 0 < k < 4.591. Will plot the relevant graph next.
Eric Nicholas K
Eric Nicholas K
4 years ago
Ignore the first part on top
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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
The accompanying graph
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Eric Nicholas K
Eric Nicholas K's answer
5997 answers (Tutor Details)
This working replaces my previous workings which I have misunderstood.