

Author  Message 

gufran.merchant
 Subject: Math Wed Mar 17, 2010 12:42 pm  
 This year a question on mean value theorem and conics will come for 10 marks also a question from Boolean algebra and inverse will come for 10 marks 

 
anjanavr47 Active member
 Subject: Re: Math Thu Mar 18, 2010 7:46 pm  
 isn't that the pattern mentioned in the specimen paper 

 
niharika_505 Active member
 Subject: Re: Math Tue Jun 01, 2010 8:06 pm  
 can ny1 plz solve dis question:
[b](sin^4x)*(cos^4x) plz plz plz solve it thnk u 

 
G7 Active member
 Subject: Re: Math Tue Jun 01, 2010 9:21 pm  
 s0ry but can u mention the question..?! 

 
niharika_505 Active member
 Subject: Re: Math Wed Jun 02, 2010 1:38 am  
 i jus wrote.............ill write it again
(sin^4x)*(cos^4x) sin to the power of 4x(4 ex) multiplied by cos to the power of 4x(4 ex) 

 
G7 Active member
 Subject: Re: Math Wed Jun 02, 2010 2:56 pm  
 sorry but u knw, the sine format is like "sin" followed by a variable like "sin x" ... what is that "x" here..? Your question is immersed in ambiguity.! 

 
abhas Active member
 Subject: Re: Math Wed Jun 02, 2010 4:27 pm  
 I think she wants to say
may be the question is to simplify above expression using standard trigno formulas 

 
niharika_505 Active member
 Subject: Re: Math Wed Jun 02, 2010 5:39 pm  
 ya abhas thts rite..........thts my question!!!!!! 

 
G7 Active member
 Subject: Re: Math Wed Jun 02, 2010 10:36 pm  
 yea yea..i thought same.. but i wanted the "question" ..!! to integrate or differentiate...or simplify..like that... 

 
abhas Active member
 Subject: Re: Math Wed Jun 02, 2010 11:28 pm  
 u may use
2sin^2 x = 1 − cos(2x) and cos(2α) = cos2α − sin2α
to simplify the expression to some extent....but ur question seems to b incomplete as in ISc OR icse usually it is asked to prove some expression equal to other...procedure of simplification will vary according to required simplified expression 

 
anjanavr47 Active member
 Subject: Re: Math Thu Jun 03, 2010 12:25 am  
 were did u get this question? 

 
niharika_505 Active member
 Subject: Re: Math Thu Jun 03, 2010 2:10 am  
 its from my math isc book................nd no no no u dont hv to prove u jus hv 2 solve it thnx 4 da pains 

 
abhas Active member
 Subject: Re: Math Thu Jun 03, 2010 2:27 am  
 you mean we have to solve it for x
then the question must be like this (sin^4x)*(cos^4x)=something
can u please tell the answer.Also tell the book which u r following.Is it M.L. Aggrawal??? 

 
G7 Active member
 Subject: Re: Math Thu Jun 03, 2010 6:30 pm  
 Yes. Abhas is right. There must be some RHS to solve. Only an equation can be solved not an expression. This is currently an expression. What is the RHS part? 

 
anjanavr47 Active member
 Subject: Re: Math Fri Jun 04, 2010 12:40 am  
 do u just need to simplify it? 

 
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 Subject: Re: Math  



 
