Would this still be correct?

[Omarrr_2163]

For these questions that say 'Show that...', would my working out have to be congruent to what is on the examiners report or If I show it through a different method would that still be correct.

On the left hand side is the examiners report working out and on the right hand side is mine. For Question D) i)

[galaxy21]

For these questions that say 'Show that...', would my working out have to be congruent to what is on the examiners report or If I show it through a different method would that still be correct.

On the left hand side is the examiners report working out and on the right hand side is mine. For Question D) i)

I would assume as long as both methods come to the same, correct outcome, VCAA would accept both.

[Omarrr_2163]

So would my working out be correct? I'd usually use financial solver but I remember reading somewhere that the examiners don't want the financial solver as your working out so I just solved it by hand. It's more comfortable for me to do it that way so what do you think?

[Aaron]

Financial solver inputs are valid working out as per 2017 examiner report (exam 2).. If it's a complex calculation, then the financial solver inputs in lieu of the formula is appropriate. https://www.vcaa.vic.edu.au/Documents/exams/mathematics/2017/fm2_examrep17.pdf (page 8-9 question 7b finance/recursion).

We must also consider that in a general sense, different textbooks are used throughout the year for different schools, so naturally there are going to be differences in working out between schools and students.

[dimenc]

i literally just did that question and did it the exact same way as you did. My teacher has said we are able to do it like that

[Omarrr_2163]

i literally just did that question and did it the exact same way as you did. My teacher has said we are able to do it like that

Sweeet!!

Financial solver inputs are valid working out as per 2017 examiner report (exam 2).. If it's a complex calculation, then the financial solver inputs in lieu of the formula is appropriate. https://www.vcaa.vic.edu.au/Documents/exams/mathematics/2017/fm2_examrep17.pdf (page 8-9 question 7b finance/recursion).

We must also consider that in a general sense, different textbooks are used throughout the year for different schools, so naturally there are going to be differences in working out between schools and students.

Sorry I meant the solve function not the financial solver...

[Aaron]

Sorry I meant the solve function not the financial solver...

In that case, no

[Omarrr_2163]

In that case, no

Okay, got that. But would my working out be wrong then or would it be acceptable? (I don't want to lose a mark for something that I did correct )

[Aaron]

It seems reasonable to me.

Probably only thing i'd suggest is try to clean up your working out and make it evident your steps to achieving the 8%. Even numbering your steps etc... something that guides the assessor to the 8%.

[S_R_K]

Normally, you should not write down any CAS syntax as part of your response, because it is not considered correct mathematical notation. So you can certainly not write something like "solve(200 = 50n, n)" (if you are using TI). The only exception to this appears to be writing down finance solver inputs (ie. N = ... PV = ..., etc.)

For "show that" questions requiring very simple algebraic rearrangements (ie. one-step linear equations), it is probably best to make sure you can do this by hand, because VCAA may not award marks if you just show the substitution and final answer. For show that questions involving more complicated equations (like those involving the compound interest formula), you can get away with showing the substitution, writing "solve for n", and then writing your answer. VCAA won't expect you to know how to do any algebraic manipulation beyond the level of year 9 maths (so no quadratics, no index laws, no log laws).