DOMAIN mei DBT

WAT CONDITIONS DO V HAV TO IMPLY ON 2TAN(Î x) in the fol. functn ?? ( Q11)

7 Answers

106
Asish Mahapatra ·

2tanΠx >0 and ≠1 ?

21
tapanmast Vora ·

ya i did that.......

apart frm that ne conditions .............

i.e. mainly 4 [2tanpix]

106
Asish Mahapatra ·

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... ·

[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 !

21
tapanmast Vora ·

The ANS givn is A,C [2]

1
The Race begins... ·

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 ·

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

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