Mathematics: Post your doubts here!

[Parhaakoo]

We can just tally our answers here...what do u guys say?

yes pls!

 

[Ebrahim12]

Here's my final answers if someone wants to cross check

 

[ba-lock-ey]

thanks!

 

[ba-lock-ey]

could you explain 10b please? thanks in advance

 

[A*****]

could you explain 10b please? thanks in advance

And 10 c aswell....pleaasseeee

 

[Holmes]

Ebrahim12 actually I want P3 and S1 so a link would work or if you could upload them

 

[Ebrahim12]

Ebrahim12 actually I want P3 and S1 so a link would work or if you could upload them

Got it from a friend, I don't have the other papers. Don't think they're out yet.

 

[Ebrahim12]

could you explain 10b please? thanks in advance

g(x)'s lowest value will be at the highest x value in its domain 4. And since the domain doesn't include 4(greater than only not greater than or equal to) then g(x) will be only be greater than this value.) substitute x=4 in g(x) to get 6.

You have to sketch the graph to really understand.


Notice how y goes to infinity at x=2, meaning there's no upper limit for g(x).

 

[Ebrahim12]

And 10 c aswell....pleaasseeee

g(x) is the "inside" function meaning its range is now the input of f(x). Since g(x) range is >6 then the input to f(x) will be >6. Substitute this in f(x) and you get that the composite function must be greater than 4.

Make a sketch for this to make sense.

 

[A*****]

Can someone pleaseeee tell me the range for this function?

 

[ba-lock-ey]

well that paper was bad

 

[ba-lock-ey]

how did you guys find it?

 

[Mohammed alomary]

What was the volume in last question

 

[Holmes]

Got it from a friend, I don't have the other papers. Don't think they're out yet.

Np ;(

 

[ba-lock-ey]

What was the volume in last question

(160/3) pi
I cant rememeber but it was something over three anyway.

 

[A*****]

Wasn't it toooooo lengthy?

 

[muhammad ali 69]

It was soooo long, what do you guys think the grading threshold would be? I'm assuming 53 or 54 is an A and around 47 to 49 is a B.

 

[anas_1]

here is paper 3, 4 and 6. feb march 2018

 

[Sijanshrestha]

What was the volume in last question

If its 12 then volume was 32 pie /3

 

[Hamnah Zahoor]

If its 12 then volume was 32 pie /3

i got the same.