Mathematics Question Thread

[pokemonlv10]

If a question has multiple parts to it, and one question asks you to find a solution to 2dp, and the next question requires you to use that answer, do you use the rounded solution or the exact value?

[RuiAce]

If a question has multiple parts to it, and one question asks you to find a solution to 2dp, and the next question requires you to use that answer, do you use the rounded solution or the exact value?

You should be using the exact value wherever possible.

BoS answers often chose not do this. My general advice is that if they tell you to find a rounded value, you can use the rounded value. If they just say to find k or something, use the exact value.

[~BK~]

another q... JIC you haven't got enough to do
i am really struggling on the attached and the succes one answers aren't clearing anything up either!!
thanks again

[RuiAce]

another q... JIC you haven't got enough to do
i am really struggling on the attached and the succes one answers aren't clearing anything up either!!
thanks again

That one's in the compilation (luckily)

[sidzeman]

Hey could someone help me with this question? For some reason the answers have the domain of x as being in between - pi/3 and pi/3 so I'm not sure they are right

[~BK~]

That one's in the compilation (luckily)

  may i ask where?

[RuiAce]

may i ask where?

It's stickied in the main board

[RuiAce]

Hey could someone help me with this question? For some reason the answers have the domain of x as being in between - pi/3 and pi/3 so I'm not sure they are right

[~BK~]

It's stickied in the main board

thanks... but woooooah!! that is such a confusing question!!
i really hope they're a little nicer this year *high hopes* <doubt it>

[RuiAce]

thanks... but woooooah!! that is such a confusing question!!
i really hope they're a little nicer this year *high hopes* <doubt it>

Yeah part (i) was the hardest part about that question. Every now and then something is just weird (and if you just don't know, skip it and come back to it later).

[magnesium4]

Hello,
I do not understand financial math questions. Can someone please explain to me how to tackle them with regards to this question attached.
Thanks

[RuiAce]

Hello,
I do not understand financial math questions. Can someone please explain to me how to tackle them with regards to this question attached.
Thanks

This particular one was addressed just a few moments ago

[~BK~]

Yeah part (i) was the hardest part about that question. Every now and then something is just weird (and if you just don't know, skip it and come back to it later).

yeah, it was really strange that part (i) and for some reason i had never heard of m=tan(theta)?? where exactly does this apply!? thanks for the advice... trouble is, i end up with more than half the paper skipped.. hahahaha 

[RuiAce]

yeah, it was really strange that part (i) and for some reason i had never heard of m=tan(theta)?? where exactly does this apply!? thanks for the advice... trouble is, i end up with more than half the paper skipped.. hahahaha 

For some examples:
If y = x, then theta = 45 degrees or pi/4.
If y = 2x, then theta = whatever tan^-1(2) is
If y = -x, then theta = -45 degrees (or 135 degrees; both work)
If y = sqrt(3)x, then theta = 60 degrees or pi/3.
If y = 0, then theta = 0.

[sidzeman]

Hey could someone help me out with this please