Mathematics: Post your doubts here!

[jooooon]

Re: Maths help available here!!! Stuck somewhere?? Ask here!

Assalamoalaikum!!


help please
s18_qp_42 q7

 

[SNOFREC2858]

Kindly help with this Earth Geometry question i cant get it.. Syllabus 4024....

 

[Muazzam]

I NEED PURE MATHEMATICS SOLUTION BOOK URGENT ...PLEASEEE HELP...

 

[Ramez Tabar]

HELLO
NEED SOME HELP IN S2 p07 O/N 2004 Q4 PART (i)
Why dont we square to find Var(x)
im getting 1325 instead of 295
Pls urgent

 

[mustafa5255]

Assalamoalaikum Wr Wb!

Post your doubts here. Make sure you give the link to the question paper when posting your doubts.


May Allah give us all success in this world as well as the HereAfter...Aameen!!

And oh yeah, let me put up some links for A level Maths Notes here.

Check this out! - Nice website, with video tutorials for everything! MUST CHECK

My P1 Notes! - Only few chapters available at the moment!

Maths Notes by destined007

Some Notes for P1 and P3 - shared by hamidali391

A LEVEL MATHS TOPIC WISE NOTES

MATHS A LEVEL LECTURES

compiled pastpapers p3 and p4 - by haseebriaz

Permutations and Combinations (my explanation)- P6

Permutations and Combinations - P6

Vectors - P3

Complex No. max/min IzI and arg(z) - P3

Sketcing Argand Diagrams - P3 (click to download..shared by ffaadyy)

Range of a function. - P1

can anyone help with part (a)? I was getting 0,180, 360, but the answer at the back is 180 only. It could be a typo, but just wanna make sure.

 

[Hamnah Zahoor]

View attachment 65749
can anyone help with part (a)? I was getting 0,180, 360, but the answer at the back is 180 only. It could be a typo, but just wanna make sure.

yes it says greater than and smaller than zero not equal to .....see the signs

 

[mustafa5255]

yes it says greater than and smaller than zero not equal to .....see the signs

i got it thankss!

 

[mustafa5255]

how would you sketch the graph of y=csc(2x-pi) for -2pi<x<2pi? wouldn't the graph be the same as y=csc(2x) since the period is pi so graph will shift pi units to the right and it should stay the same, right?

 

[Hamnah Zahoor]

how would you sketch the graph of y=csc(2x-pi) for -2pi<x<2pi? wouldn't the graph be the same as y=csc(2x) since the period is pi so graph will shift pi units to the right and it should stay the same, right?

Desmos | Graphing Calculator

www.desmos.com

try sketching it on this calculator

 

[mustafa5255]

Desmos | Graphing Calculator

www.desmos.com

try sketching it on this calculator

I did, but didnt understand it. I've tried everything

 

[Hamnah Zahoor]

I did, but didnt understand it. I've tried everything

Try sketching the following graphs

 

[Hamnah Zahoor]

I have crossed the values from the given limits for a clearer image

 

[mustafa5255]

Try sketching the following graphs

View attachment 65751 View attachment 65752

the graph of y= csc(2x) should repeat it self 😣! I'm sorry for bothering you. You can just ignore me now.

 

[Hamnah Zahoor]

the graph of y= csc(2x) should repeat it self 😣! I'm sorry for bothering you. You can just ignore me now.

it is repeating it just lags by pi/2 units

 

[mustafa5255]

it is repeating it just lags by pi/2 units

exactly!!! But whyy?

 

[Hamnah Zahoor]

ok now you are confusing me too
you are asking why is it lagging?

 

[mustafa5255]

ok now you are confusing me too
you are asking why is it lagging?

I'm so sorry but yes thats what im asking. The graph of y=csc2x should be the same as y=csc(2x-pi) but it only shift pi/2 units to the right, why?

 

[Hamnah Zahoor]

exactly!!! But whyy?

Graph y=csc(2x-pi) | Mathway

Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.

www.mathway.com

open this website and read each and every detail there given of the graph of how he generalized the equation and how the phase shift was calculated.
if you still don't understand it than ask here again.

 

[Hamnah Zahoor]

do the same for the other equation csc(2x)

 

[mustafa5255]

do the same for the other equation csc(2x)

I didnt know thats how you get the phase shift. I first sketched the graph of y=csc(2x) and then shifted it pi units to the right (y=csc(2x-pi)) is this wrong? I've been doing this for a long time and always got the right answers.