Mathematics: Post your doubts here!

[Thought blocker]

Do you have any idea when we use range , or funtion in inequalities after finding x values in modulus

P3 ?

 

[sitooon]

https://www.mediafire.com/folder/c8gq13yp66lh9/Cambridge International AS and A Level#rr6pjltdmqb75

Thanks , but this site has no examiner report for phy !

 

[sitooon]

P3 ?

yes

 

[Thought blocker]

Thanks , but this site has no examiner report for phy !

I am too searching, if you get it, do send me

 

[Thought blocker]

yes

OK

 

[sitooon]

I am too searching, if you get it, do send me

sure

 

[Namehere]

Do you have any idea when we use range , or funtion in inequalities after finding x values in modulus

If you give me an example to try out maybe I could help you.

 

[sitooon]

If you give me an example to try out maybe I could help you.

I posted two examples one page back i guess

 

[Namehere]

Link me the question please.

 

[sitooon]

Link me the question please.

https://www.xtremepapers.com/commun...st-your-doubts-here.9599/page-543#post-742942

 

[Namehere]

How to know if its going to be range , or ( or inequality ) ?

What are the answers to both questions?

 

[sitooon]

What are the answers to both questions?

x < –1, x > -3/5

Obtain x > –1/2

 

[Namehere]

Ok, going to upload the explanation in a sec.

 

[Namehere]

https://www.xtremepapers.com/commun...st-your-doubts-here.9599/page-543#post-742942

Sorry for my "writing". Tell me if you dont understand something. Try answering your questions yourself first before asking me though

 

[Namehere]

Sorry for my "writing". Tell me if you dont understand something. Try answering your questions yourself first before asking me though

For the explanation on the right, at the beginning it should read " making it less than (the modulus part) -> times by -1 changes the inequality sign"

 

[sitooon]

Sorry for my "writing". Tell me if you dont understand something. Try answering your questions yourself first before asking me though

Why did you draw first case and used no. line second case ?

 

[Namehere]

Why did you draw first case and used no. line second case ?

Well the first quesiton gave a quadratic, so sketching a graph is always useful for solving some problems involving inequalities. The second question gave two inequalities, so maybe both could be right, but in this case for both inequalities to be right, x > -1/2 has to be true (since x > -1/2 has to contain the values for x> 5/4 - It´s the same as saying x>2 and x>10, for both to be right x can be any value bigger than 2 (which includes any value bigger than 10)). The number line is just there to visualize the problem.

 

[ZaqZainab]

100%! D Nah... depends on the paper. Do wayy too many siily mistakes so usually around 70/75.

so you done with as level?

 

[ZaqZainab]

I am too searching, if you get it, do send me

http://maxpapers.com/category/qualifications/international/cambridge/a-level/a-level-physics-9702/ i found this site

 

[ZaqZainab]

Wo hi to faraq hai, tum tum ho or me me hu

lol as she said this isn't that high