Maths, Addmaths and Statistics: Post your doubts here!

[Asad.Babur]

Never Underestimate yourself and also never Overestimate yourself (that means insan ka bacha ban, ajj nahi to kabhi nahi) focus on your studies my dear one

Nice Complement! I liked that

 

[FLRNAB]

Can anyone explain to me Question 4 Part B (ii)?
Paper: http://papers.xtremepapers.com/CIE/...Calculator Version) (4024)/4024_s11_qp_22.pdf

 

[Awesome12]

Can anyone explain to me Question 4 Part B (ii)?
Paper: http://papers.xtremepapers.com/CIE/Cambridge International O Level/Mathematics D (Calculator Version) (4024)/4024_s11_qp_22.pdf

Multiply the expressions that you have got for Vn and Un in parts (a)(i), and (b)(ii) respectively

 

[FLRNAB]

Multiply the expressions that you have got for Vn and Un in parts (a)(i), and (b)(ii) respectively

(a)(i) X (b)(ii) = 17 + kn -6n^2 ?

 

[Awesome12]

(a)(i) X (b)(ii) = 17 + kn -6n^2 ?

and isn't that the correct answer?

 

[FLRNAB]

Also there is frequency polygons in the maths syllabus. Is there any question about frequency polygons in the past papers?

and isn't that the correct answer?

Yeah that's correct.

 

[Asad.Babur]

Also there is frequency polygons in the maths syllabus. Is there any question about frequency polygons in the past papers?


Yeah that's correct.

Yes, I believe Frequency Polygons, and Curve are a MUST! BTW, I have done them in stats already, so no need here!

 

[FLRNAB]

Yes, I believe Frequency Polygons, and Curve are a MUST! BTW, I have done them in stats already, so no need here!

I have looked through the classified and there is no question about frequency polygons.

 

[Asad.Babur]

I have looked through the classified and there is no question about frequency polygons.

The EASY they are, I prefer to be on safer site

 

[FLRNAB]

The EASY they are, I prefer to be on safer site

Well anyway I have another query. I know how to find angle of rotation but it can go both ways clockwise and anti-clockwise like 270 degree anticlockwise rotation is equal to -90 degree clockwise rotation. How do we choose which one to write in the answer?

 

[muhammadali233]

Also there is frequency polygons in the maths syllabus. Is there any question about frequency polygons in the past papers?


Yeah that's correct.

What is this? and How does this look like?

 

[FLRNAB]

What is this? and How does this look like?

http://www.bbc.co.uk/schools/gcsebitesize/maths/statistics/representingdata2rev3.shtml

 

[Asad.Babur]

Well anyway I have another query. I know how to find angle of rotation but it can go both ways clockwise and anti-clockwise like 270 degree anticlockwise rotation is equal to -90 degree clockwise rotation. How do we choose which one to write in the answer?

***amd***, I guess the one which shows least rotations, but amd can answer more greatly!

 

[muhammadali233]

http://www.bbc.co.uk/schools/gcsebitesize/maths/statistics/representingdata2rev3.shtml

Great thanks man!

 

[FLRNAB]

***amd***, I guess the one which shows least rotations, but amd can answer more greatly!

According to my guess it should be the one which shows shortest distance between A and A`. i.e 90 cw
Such as:

Although can be Clock-Wise rotation of 90 and anticlockwise rotation of 270.
Also in my math book it says clockwise is negative degree rotation but I don't think we write -90 or a negative before degree. At least I haven't seen that in the marking schemes. What are your thoughts guys?

 

[Asad.Babur]

According to my guess it should be the one which shows shortest distance between A and A`. i.e 90 cw
Such as:

Although can be Clock-Wise rotation of 90 and anticlockwise rotation of 270.
Also in my math book it says clockwise is negative degree rotation but I don't think we write -90 or a negative before degree. At least I haven't seen that in the marking schemes. What are your thoughts guys?

Same as YoU! Cause that makes much sense, however, I believe they would tell you calculate Counter or Clock-Wise ! Check PastPapers

 

[Awesome12]

According to my guess it should be the one which shows shortest distance between A and A`. i.e 90 cw
Such as:

Although can be Clock-Wise rotation of 90 and anticlockwise rotation of 270.
Also in my math book it says clockwise is negative degree rotation but I don't think we write -90 or a negative before degree. At least I haven't seen that in the marking schemes. What are your thoughts guys?

This is a clockwise transformation. Imagine the fig. in relation to your clock

 

[Awesome12]

It's clockwise. You are moving from top to bottom right hand side.

Oh yes meant clockwise

 

[***amd***]

According to my guess it should be the one which shows shortest distance between A and A`. i.e 90 cw
Such as:

Although can be Clock-Wise rotation of 90 and anticlockwise rotation of 270.
Also in my math book it says clockwise is negative degree rotation but I don't think we write -90 or a negative before degree. At least I haven't seen that in the marking schemes. What are your thoughts guys?

youll simply write "90 degrees clockwise" or "270 degrees anti-clockwise", that'll do enough.

 

[kirann]

can anybody tell me how to calculate lower bound and upper bound..
and what is meant by correct to nearest 10
of cm
or correct to the nearest cm