Mathematics: Post your doubts here!

Mr.Physics

Mr.Physics

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husnain99 said:
Mr.Physics approx how much days would be required to cover these IG maths topics ?
And which of the topics should I cover first ? ( chapters attached )
Click to expand...
I would recommend you to learn the topics in this order. (Attached)
And InshAllah you'll finish all of em in a month or less. :)
And don't worry about that problem solving topic, it's really easy :p
The difficult topics among these are transformations, vectors and probability so they are gonna take most of your time.
Feel free to ask any more questions, I'll try my best to help :)
 

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Danish Sardar

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Need help in "b" . I think the question has a mistake or i am doing it wrong check it what do u think i am getting 589.065. DONT MIND THAT SCRIBBLES :p
 

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Mr.Physics

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Danish Sardar said:
Need help in "b" . I think the question has a mistake or i am doing it wrong check it what do u think i am getting 589.065. DONT MIND THAT SCRIBBLES :p
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No man !!
Actually you misunderstood the question.

R= 4.5 % per year
T=3 years
P= 681 - I <----- This is the tricky part here. The question says that he withdrew this amount after the interest was paid.

I = PRT/100
100I = (681 - I) x 4.5 x 3
100I = 13.5 x (681 - I)
100I = 9193.5 - 13.5I
113.5I = 9193.5
I = 9193.5/113.5 = $81

The questions asks for the amount he invested which is P
So P = 681 - I = 681 - 81 = $600
 
Danish Sardar

Danish Sardar

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Mr.Physics said:
No man !!
Actually you misunderstood the question.

R= 4.5 % per year
T=3 years
P= 681 - I <----- This is the tricky part here. The question says that he withdrew this amount after the interest was paid.

I = PRT/100
100I = (681 - I) x 4.5 x 3
100I = 13.5 x (681 - I)
100I = 9193.5 - 13.5I
113.5I = 9193.5
I = 9193.5/113.5 = $81

The questions asks for the amount he invested which is P
So P = 681 - I = 681 - 81 = $600
Click to expand...
I understand other thingsbut how u got that 13.5I by multiplying it with (681-I) Mr.Physics
 
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Danish Sardar

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I tried but i got the answer and i dont know if its correct plz ch3ck it 3a
 

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fleurisabelle

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There is a topic in my book, covering Cartesian equations, equation of a circle and parametric equations of a circle. It's not in the syllabus, is it? Just wanted to confirm, cuz I can't see it anywhere in the syllabus and I thought I might skip it
 
Anum96

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fleurisabelle said:
There is a topic in my book, covering Cartesian equations, equation of a circle and parametric equations of a circle. It's not in the syllabus, is it? Just wanted to confirm, cuz I can't see it anywhere in the syllabus and I thought I might skip it
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I believe youre asking for Alevel topics? :p This is the IGCSE thread :p
Cartesian equations are included in vectors. You should just do whatever is in the syllabus, few changes might have been there for 2016 so yeah.
 
Mr.Physics

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fleurisabelle said:
There is a topic in my book, covering Cartesian equations, equation of a circle and parametric equations of a circle. It's not in the syllabus, is it? Just wanted to confirm, cuz I can't see it anywhere in the syllabus and I thought I might skip it
Click to expand...
It ain't in IGCSE syllabus. It's for A level. Yeah you SHOULD skip it :p
 
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