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Mathematics: Post your doubts here!

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Guys please help me to do this question
IVDcOF.jpg
 
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Guys please help me to do this question
IVDcOF.jpg
I solved this type of question first as well. Check it out Haya. :)
I guess it was your previous question on Integration. Btw where u get these questions from?
Are they from SAT II? (I know SAT II isn't easy though might be asked in 2 or 3 marks :p)
Is the answer [√(3) - 1]/2 ?
 
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354
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I solved this type of question first as well. Check it out Haya. :)
I guess it was your previous question on Integration. Btw where u get these questions from?
Are they from SAT II? (I know SAT II isn't easy though might be asked in 2 or 3 marks :p)
Is the answer [√(3) - 1]/2 ?
yeah the answer is right !! :p .. now tell me how to do it ! :p these questions are from nabel elias book .. (Egyptian Maths doctor ! :)
 
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Any one please?
If u just take first term u get =1/2
If u add first two terms=1/2+2/6=5/6
Similarly for sum of three terms=1/2+2/6+3/24=23/24
...............sum of four terms= 1/2+2/6+3/24+4/120=119/120

So if u observe the pattern of sums
1/2, 5/6, 23/24, 119/120...........

So general formula for the sum would be
= ((n+1)!-1) /(n+1)!

= 1 - 1/(n+1)!
If n tends to infinity 1/(n+1)! = 0
Therefore Sum to infinity of the series is 1.
 
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Somebody help me with A2 trigonometry differentiation and integration, i need notes or someone could make me understand them.
http://sh.st/io4nQ
Look at chapters : 3, 4, 5. I bet you wont have any more doubts in it. But watch all the tutorials very carefully no matter how long it takes as you should build a very powerful concept in your mind that you dont need to revise anytime. All the best.
 
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