Suggested Answers to the HSC 2016 Mathematics Exam (+Discussion!)

[MysteryMarker]

For Q11 c) would i have lost a mark for not combining the bounds? As in leaving it as x<=5 and x>=-1?

[pikachu975]

For Q11 c) would i have lost a mark for not combining the bounds? As in leaving it as x<=5 and x>=-1?

It'd probably still be alright.

[JamesMcFadden]

For Q10 in MC, do both C and D not equal 4, like the original function does when you sub in x=1??

[ml125]

12aii how was this done? I think that the top line should read 15 because it was 3 +4 -22

Top line would be 3(1)+4(0)-22=-19

[Klexos]

For Q10 in MC, do both C and D not equal 4, like the original function does when you sub in x=1??

I actually took the time to test it out with other numbers, C doesn't work after x = 1 or x = 2

[itsAnuu]

pretty sure that simpsons rule solutions is wrong

[ml125]

But 3 + 4 -22 doesn't equal 19?

You lose the 4 because it gets multiplied by 0, it becomes 3-22=-19 Then you take absolute value, so 19.

[zachary99]

i cant see the answers for question 14+ .....dont know if its just my computer or....

[jamonwindeyer]

shouldn't the answer to Q 6 be pi/3 (A) and not B, because the period of a tan graph is pi/b for graphs in the form a tan (bx)

Thanks for the picking up this error first!! I'm going through the conversation to catch the rest now!!

I set myself the challenge to do it in 1.5 hours from 6-7:30, and I succeeded, but I'm expecting an algebra mistake or two

[jamonwindeyer]

i cant see the answers for question 14+ .....dont know if its just my computer or....

It was me too; I just fixed it, try again!

[sanj123]

Question 13 d does not have a minus x in it

[jamonwindeyer]

Yeah it should be -10 on the numerator.

Which question are we at here? If I agree I'll fix it up!

pretty sure that simpsons rule solutions is wrong

Can you give me the alternative? I think its okay but I could be wrong

[zachary99]

question 14 is simpsons rule,  therefore it will 2/6 in front of the brackets not 2/2 

[jamonwindeyer]

Question 13 d does not have a minus x in it

Yes it does, we need to subtract the area underneath \(y=x\)

[pikachu975]

Pretty sure the range and last question were wrong, as well as h = xy is meant to be h = y/x