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Using R1 R1-R2-R3 and taking 2 common out of R1, Now use R2 R2-R1 and R3 R3-R1 to obtain and now expand from R1 to easily get the value as
Further we have and hence we must have Finally , from which we immediately have …........................................................................................
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@ pratyay there is a separate book coming , on the name of SOLUTION TO PROBLEMS IN IIT MATHS BY A DAS GUPTA , by bharti bhawan , just take it , it explained each and every ques of a das gupta . and...
@ prtyay if u are targeting both jee mains as well as advanced then go with iit mathematics by m l khanna , this is the complete book for jee and covvers shortcut trick as well , and if u will able...
Hii First of all HAll and knight is not at all necessary , You can either go for SK Goyal or OP Juneja .But if your heart is out on Hall you can do the chapter of Sequence and series, Binomial ,...
There are two series in this 1+6 + 11 . . . . + 4+5+6. . . . Take 100 terms of each and just apply S 100 formula for each.
I think question is incomplete. If you want nth term of the series it will be x n / (1 – x 2n ) that is quite straight forward from the question itself.
@ gauri u are now in class 8 th , then do follow the book opf trshna foundation , they are excellent , and even u can try the programme of askiitians as well , they are designed to ace you in...
@ nikita WHAT EXACTLY U WANT TO KNOW ?? i am sorry there is no attachment in the question , kindly attach the ques in which u have problems . and the most imp topics in that chap is sum of n terms...
Dictionary contains how many words ? or atleast provide the condition by which dictionary is formed. Please specify as the question is incomplete.
Question is incomplete. Please put the complete question.
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