21
tapanmast Vora
·2009-04-01 20:15:53
ya i did that.......
apart frm that ne conditions .............
i.e. mainly 4 [2tanpix]
106
Asish Mahapatra
·2009-04-01 20:18:11
i dont think any restrictions on that ... except when tan(Πx) is not defined i.e. Πx ≠(2n+1)Π/2
1
The Race begins...
·2009-04-01 20:32:17
[2tanÎ x]. As this is under log function , following conditions must be applied
x ≠n (ε N)
2tanΠx ≥ 2 => Πx ε [nΠ+Π/4,(2n+1)Π/2) {nεN} => x ε [n+1/4,n+1/2) {nεN}
Therefore only the fourth option matches the condition nεN. hence answer is (d)
correct me if i am wrong !
1
The Race begins...
·2009-04-01 20:43:02
I'm sorry, my answer is not the final one, we must also find the domain of (x2+2x-3)/(4x2-4x-3). and then find the intersection of these two domains to get the final domain.
I think u can carry on the further simplification urself. :)
21
tapanmast Vora
·2009-04-01 20:51:30
oh yah!! very much....
I mainly wanted to knoe if i m not miswsin on nw condtn 4 tanpix
but6 thats fine ...... so ha jaega