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Just wondering, not that I'm planning to.

i thought the intersection points weren't exact? nvm I should have shifted it by a multiple of pi for this example

They asked for decimals, which you can't get if you graph it since it wont be completely accurate

I know if ln(ax+b)=ln(c) ax+b=c and if a^mx+b=a^c then mx+b=c but I didn't know it would apply to trigonometry too cause I never came across any past paper with that type of trigonometric equation

Also they never taught us the identity: If cos(ax+b) = cos(c) then ax+b = c. So I don't understand why some solutions use that

I did that too, I hope they give 2 marks for that instead of just 1

Forgot covid even existed. Go because it's a flu, plus I don't think it's illegal now.

it starts with a 3 though

nerd

I didnt know you could equate cos(ax+b)=cos(c) then ax+b=c

No u will lose marks

one of the solutions said "iqr is too small for D" but that boxplot isn't even to scale. I think they just wanted to show you that it was normally distributed

I asked chat gpt,

Surely question 8 is C right? Cause the boxplot can look like that, but for C, it's multimodal.

someone already did, this one is the highest quality pdf of the test we have rn

I think you could have gotten a tan since you have another cos then you could have solved it normally

The only other way I think is possible is changing cos into sin

one of the solutions I saw did it that way. How did you do it?

No the from question 26 and before, those were like the last year questions. We never even learnt the identity if cos(ax+b) = cos(c) ax+b = c. I don't even think that's in the syllabus. Unless we were suppose to change cos into sin.

How much time did you have to spare when you did the test?