Mathematics: Post your doubts here!

[NinjaInPyjamas]

Are there any useful links which can help in Maths pls?

 

[Thought blocker]

Are there any useful links which can help in Maths pls?

Math is recently added here : https://www.xtremepapers.com/commun...emistry-and-mathematics-a-and-as-level.33891/
Its at the end of 1st post. Take a look. Tutorial's are helpful.

 

[Haya Ahmed]

http://papers.xtremepapers.com/CIE/...S Level/Mathematics (9709)/9709_s10_qp_33.pdf

Q9 part ii

 

[Lostsoul]

In how many different ways can the letters of the word 'LEADING' be arranged in such a way that vowels always come together?

Help required with some working please
why can't 5 X 3! X 7C3 be the answer?
Heeeeelllppppp pleaaasseeee

 

[The Sarcastic Retard]

http://papers.xtremepapers.com/CIE/Cambridge International A and AS Level/Mathematics (9709)/9709_s10_qp_33.pdf

Q9 part ii

I found this on yahoo : https://in.answers.yahoo.com/question/index?qid=20141120095646AA8lkWZ

 

[The Sarcastic Retard]

In how many different ways can the letters of the word 'LEADING' be arranged in such a way that vowels always come together?

Help required with some working please
why can't 5 X 3! X 7C3 be the answer?
Heeeeelllppppp pleaaasseeee

I found this on yahoo : https://in.answers.yahoo.com/question/index?qid=20110603222454AAcn1Xy

 

[Lostsoul]

I found this on yahoo : https://in.answers.yahoo.com/question/index?qid=20110603222454AAcn1Xy

Haha thanks!

 

[Lostsoul]

Some article got me confused, a quadratic equation can have both maximum and minimum points or just one of them?

 

[The Sarcastic Retard]

Some article got me confused, a quadratic equation can have both maximum and minimum points or just one of them?

Both.

 

[The Sarcastic Retard]

Haha thanks!

No problem.

 

[Haya Ahmed]

Guys how to solve this question with steps please !

Thought blocker

 

[Thought blocker]

Guys how to solve this question with steps please !

Thought blocker

http://www.symbolab.com/solver/defi.../\int_{0 }^{ 1} x/\sqrt{1+x}dx/?origin=button

 

[Haya Ahmed]

Thought blocker can you explain please ? .. the steps in that site are non- logical ... why can't we cancel and why can't we substitute u in place of sqr root (x+1) in the dx !!

 

[The Godfather]

Thought blocker can you explain please ? .. the steps in that site are non- logical ... why can't we cancel and why can't we substitute u in place of sqr root (x+1) in the dx !!

After this I guess you know what to do.

 

[Thought blocker]

Thought blocker can you explain please ? .. the steps in that site are non- logical ... why can't we cancel and why can't we substitute u in place of sqr root (x+1) in the dx !!

Sorry I never see this. .-.
Thanks to him

 

[me_lonelyboy]

So Can some one help me with PART B ofthis question? This is from edxcel june 2013R


I have no Idea how to do it. I tried marking scheme and its more confusing, I usually use examsolutions but solution of this paper is not there.

He is the marking scheme of this question. How did they get 71 there? Not to mention how did they get x=0.1?!

 

[Thought blocker]

So Can some one help me with PART B ofthis question? This is from edxcel june 2013R
View attachment 49225

I have no Idea how to do it. I tried marking scheme and its more confusing, I usually use examsolutions but solution of this paper is not there.

He is the marking scheme of this question. How did they get 71 there? Not to mention how did they get x=0.1?!
View attachment 49224

I cannot get the pic of the question. But figuring from the markscheme there is some mistake. Simplifying with surd rules it should be 10 cbrt(7.1) hence x can be 0.1. Upload the question again dude.

 

[RoOkaYya G]

So Can some one help me with PART B ofthis question? This is from edxcel june 2013R
View attachment 49225

I have no Idea how to do it. I tried marking scheme and its more confusing, I usually use examsolutions but solution of this paper is not there.

He is the marking scheme of this question. How did they get 71 there? Not to mention how did they get x=0.1?!
View attachment 49224

cube root 7100 can be written as cube root 71 * 100
ths can further be written as surd form like 10 cube root 71
using ur expansion 71 =( 8 - 9x )
replace this in the surd form expression...it will become 10 cube root ( 8 - 9x )

PS i need the expansion to get the result x=0.1
upload it plz. im too lazy to work tht out.

 

[Thought blocker]

cube root 7100 can be written as cube root 71 * 100
ths can further be written as surd form like 10 cube root 71
using ur expansion 71 =( 8 - 9x )
replace this in the surd form expression...it will become 10 cube root ( 8 - 9x )

PS i need the expansion to get the result x=0.1
upload it plz. im too lazy to work tht out.

btw u need to replace ur expansion cube root ( 8 - 9x ) in the surd form n expand. n solve for x using quadratic formula judging from the answer 0.1

8-0.9 = 7.1 ?

 

[RoOkaYya G]

8-0.9 = 7.1 ?

wht?