Mathematics: Post your doubts here!

[osama ahmed ibrahim]

HELP ME TO DO II AND III
HELP WHY DID HE SUBTRACT 10 FROM 20

 

[osama ahmed ibrahim]

what does it mean when q said
(c also lies on the line parellel to AB through 3,11
i cant understand what is happening below red line

 

[osama ahmed ibrahim]

LASTLY n V i cant understand why he chose positive value when finding inverse

 

[The Sarcastic Retard]

HELP ME TO DO II AND IIIView attachment 60489 View attachment 60488
HELP WHY DID HE SUBTRACT 10 FROM 20

(ii) One complete rotation = 2pi
therefore 2pi = kt
t =30
Thus k = pi/15

 

[The Sarcastic Retard]

what does it mean when q said
(c also lies on the line parellel to AB through 3,11
i cant understand what is happening below red lineView attachment 60491 View attachment 60490

The gradient is same in both the lines. This is what they meant to say.
So below the red line they have equate the two lines as they are intersecting to find out coordnates of C

 

[The Sarcastic Retard]

LASTLY n V i cant understand why he chose positive value when finding inverseView attachment 60493 View attachment 60492

They have done like this :
Domain of h is Range of h inverse.
As range of h inverse has positive values, so we chose positive in that +/- sign.

 

[The Sarcastic Retard]

HELP ME TO DO II AND IIIView attachment 60489 View attachment 60488
HELP WHY DID HE SUBTRACT 10 FROM 20

That t is b/w 10 and 20 minutes. So the difference is of 10 minutes. That shows, For 10 minutes passangers will be abbbove 90m

 

[osama ahmed ibrahim]

So below the red line they have equate the two lines as they are intersecting to find out coord

thanks but c also lies on the line parellel to AB through 3,11
what should i understand from this

 

[The Sarcastic Retard]

thanks but c also lies on the line parellel to AB through 3,11
what should i understand from this

I mentioned in above post, this means the two lines will have same gradient.

 

[The Sarcastic Retard]

thanks but c also lies on the line parellel to AB through 3,11
what should i understand from this

 

[qwertypoiu]

Shouldn't it be √(6²+6²) for q and likewise for p?
And what about 'arg' part?

Can u do alpha and beta of this? I pasted this few days back but u disappeared and no one solved it... I'll quote all the problems in a few min, can u do them today or tmrw?

Spoiler

 

[Copy Cat]

Part(ii)

 

[Copy Cat]

(b)

 

[Copy Cat]

(ii)

 

[khan450]

hi plz can any one help me in this question?

 

[mistique_bee]

hi plz can any one help me in this question?

is it a maths question??

 

[Rizwan Javed]

hi plz can any one help me in this question?

Divide 2 with 0. Use the calculator and you will get your answer. It was simple, bro

 

[Stefan Salvatore]

Hi, in dire need of some urgent help:

Q: Find how many terms there are in the geometric sequence using logarithms:
-1, 2, -4, 8, ....., -16777216

a= -1

r= -2

nth term (last term) = ar^n-1

 

[Saad the Paki]

Does Anyone the w 2015 examiner report for maths?

 

[Rizwan Javed]

Does Anyone the w 2015 examiner report for maths?

http://papers.gceguide.com/A Levels/Mathematics (9709)/9709_w15_er.pdf