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Maths, Addmaths and Statistics: Post your doubts here!

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Doing Maths after Add Maths seems like I'm doing Kindergarten in Grade 11. Such a Huge change in difficulty level.
For the first time and for surely the LAST, Thank You CIE!
 
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Doing Maths after Add Maths seems like I'm doing Kindergarten in Grade 11. Such a Huge change in difficulty level.
For the first time and for surely the LAST, Thank You CIE!
me and my friend who didnot do addmath were doing a paper together i was constantly applying addmath concepts and it made it look 10 times as easy
 
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hahahaha // isy waja say tu yeh DP hai .. warna tu kabki change kardi hoti :D

btw thanks for the center of rotation :) I didn't knew! actually which book has that chapter of transformations ? I couldn't find it in any of them ...
its in D4 appendix
 
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anyone plz explain answer of q6 part (a).....
Attached Files:




u should know the properties of circle very well, if D and E are tangents to the circle then it is obvious that CD = CE
and DC = 5 cm so EC becomes 5 as well.
the property is that two tangents coming from a single point outside the circle will be equal, here two tangents were coming from C so CE and CD are equal

Sin CAD = 5/13
so CAD = 22.6
 
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is it necessary to memorize all those transformation matrices ?? is there no concept involved :\
yeah it is necessary :(
but wat do I do is write matrx x object's cordinate = image cordinate

I write matrix in the form of a,b,c,d and then after multiplication compare the values of a,b,c,d.
I know its quite time wasting but it comes quite handy when yu become blank during transformation.
THis method is also most accurate.. :) (y)
 
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