D1 Trace issue

Branny101

In the question below in part b I don't understand the second 'reason' they have given?
Here is the question:

And here's the answer:

Help would be much appreciated! Thanks

Posted from TSR Mobile

Reply 1

TenOfThem

Original post by Branny101

In the question below in part b I don't understand the second 'reason' they have given?
Here is the question:

And here's the answer:

Help would be much appreciated! Thanks

Posted from TSR Mobile

The only reason that this works for 300 is that the answer is between 6 and 7

A and B need to be either side of the answer

Reply 2

Branny101

Original post by TenOfThem

The only reason that this works for 300 is that the answer is between 6 and 7

A and B need to be either side of the answer

Wow you explained that so simply. Thank you

Posted from TSR Mobile

Reply 3

Branny101

Original post by TenOfThem

The only reason that this works for 300 is that the answer is between 6 and 7

A and B need to be either side of the answer

One more thing I have asked this before but to confirm will I be penalised for using pencil for Dijkstra's algorithm? And also letters as I go along (for the route)?

Posted from TSR Mobile

Reply 4

TenOfThem

Original post by Branny101

One more thing I have asked this before but to confirm will I be penalised for using pencil for Dijkstra's algorithm? And also letters as I go along (for the route)?

Posted from TSR Mobile

No

But I would go over in black pen when satisfied with the solution

Reply 5

Branny101

Original post by TenOfThem

No

But I would go over in black pen when satisfied with the solution

You've been of much help - thank you.

Posted from TSR Mobile

Reply 6

Branny101

Original post by TenOfThem

No

But I would go over in black pen when satisfied with the solution

Hi sorry to revive an old thread but is it okay to use fractions for a trace? I seem to make mistakes otherwise - can I not quote the final print in decimals? Thanks

Posted from TSR Mobile

Reply 7

TenOfThem

Original post by Branny101

Hi sorry to revive an old thread but is it okay to use fractions for a trace? I seem to make mistakes otherwise - can I not quote the final print in decimals? Thanks

Posted from TSR Mobile

during the working out you can use anything but be mindful of the answer required when deciding if to use fractions or decimals for the final result