Mathematics: Post your doubts here!

[abcde]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

AOA!
I hope you don't mind @mathangel, I really couldn't resist solving this! Please don't mind
@captain danger:
Opposite sides of a parallelogram are equal and parallel so if you show that EF and HG are the same vectors you have proven the statement.
EB is half of AB so it is the vector (2 4). This is a column vector!!! I dont know how to write it using this keyboard!
BF is half of BC so its (1 0) [again in clomn form,okay?]
Add EB and BF to get EF which is (3 4)
Similarly find HD and DG to get HG, which also be (3 4) [column vector!]
Thus you have proven that they are opposite sides of a parallelogram.

 

[CaptainDanger]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

How is EB half of AB???? Not given there??? Nothing???

 

[CaptainDanger]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

And am I supposed to take HD half of AD and GD half of CD?????

But What I dont get is that its not given there????????

 

[XPFMember]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

AOA!
I hope you don't mind @mathangel, I really couldn't resist solving this! Please don't mind

Waalaikumassalam!!!

well ..abcde ..y i will i mind..u r making my wotk easier

as i said...i'm kinda busy ...so i appreciate ur help

Jazak Allah Khair!!

and next time...any query...u or any other member is free to answer without hesitation...incase i dont reply or even may add comments or suggestions

 

[CaptainDanger]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Yeah... We are here for helping each other...

 

[abcde]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Okay so Mr. Captaindanger, the question clearly states that " E, F, G and H are the midpoints of AB, BC, CD and DA respectively". That's why! Yes ur supposed to take HD half of AD and so on..

 

[CaptainDanger]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Oooppsss! Alright... Thanks man... Must have miss read it...

 

[abcde]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

You're welcome

 

[CaptainDanger]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

:lol:

 

[hElPsEeKeR15]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

thanks everyone!!!
I really got it

 

[pawarrajas]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

maths made the most easy ask any doubts!!!!! :mrgreen: :mrgreen: :lol:

 

[XPFMember]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

 

[daviantt]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

hello math angel i just want to know how to study for bearing in math it is really confusing and thx

 

[XPFMember]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

hello math angel i just want to know how to study for bearing in math it is really confusing and thx

Assalamoalaikum!!!

plz give me sum time it's nt at all difficult ...my exams will finish by march Insha ALlah...will tell u then....remind me if i forget

 

[invi240]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Asalam aliekum,
How can I find the inverse of a matrix?
and of course I simply cant do transformations...especailly sheer and stretch..and their factors :/
Yes...and in bearings...if they say find the bearing of A from B, what do you find? I always get confused in that
And, how do you find the sides of a regular polygon? and circle theorms!!!!

Sorry,I know so many doubts, but I have an exam tomorrow...and I dont think I will pass
HELP!

 

[XPFMember]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

waalaikumassalam!!

how long can u wait 4 the answer??

for shear and stretch i've previously posted in this thread...rest i'll try to reply soon..let me know how long can u wait for

 

[XPFMember]

Re: IGCSE Maths Tips nov.2010!Confused!have questions?Post h

Assalamoalaikum!!
well check this!

Assalamoalaikum!!

can you tell me how to find matrix for stretch and shear

yeah sure!!
The matrix for shear: s.f takes place of zero if invariant line is x axis then change will be in the column for y coordinate in the unit matrix and vice versa.same for shear but s.f will take place of 1
2 remember this just remember if we arrange shear & stretch alphabetically shear comes first & even 0 comes before 1 so relation of zero and shear

Formula for shear factor => dist. point moves due to shear/dist. of that point from invariant line

dist. point moves due to shear : always move from object to image now see if it is +ve or -ve (+ve is up or right movement and -ve is down or left movement)

dist. of that point from invariant line:always move from invariant line to the point now check whether its positive or negative then use calc. to find out final ans. putting signs appropriately

The same applies for stretch dont forget to go from invariant line to point

Hope u got it Do not hesitate to ask more questions!!

 

[XPFMember]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Follow the link and download the pdf file..it's helpful for revision

 

[XPFMember]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

i think u ppl need help wid bearing...i'll soon make sum notes on that...and post it...may take one week...cuz i have exams now

 

[XPFMember]

Re: Maths made easy =) stuck sumwhere?Ask ur doubts here!!

Asalam aliekum,
How can I find the inverse of a matrix?

I'm sorry i cant explain it at the moment as i'm busy preparing 4 my exams...but this might help u i guess --> viewtopic.php?f=24&t=4220#p45731