@pratyaksh_tyagi @Aayush @Anindya_Sikdar
use the property that if f(x) is derivable at x=a and f(a)=0 and g(x) is continuous at x=a then f•g will be derivable at a
For 6th f'<0 then set coefficient of x^2 <0 and D<0
In 28 how is there in π in the options ?
I do not see any way of it !
There must be some way
Yeah 25 is a , @ananda_krishnan try 28
25.A i guess.
thanks @ananda_krishnan bro.. long time no?
@pratyaksh_tyagi didnt know that property foe question 24 about differentiability..is it a result or something ?
and for question 6, i got two different ranges for 'a' by the two conditions.
yah @Mayank_Chowdhary bro... i too dont have any clue from. where that pi comes!
ok got it.. thanks a lot @pratyaksh_tyagi bro
Yes bro @Prakhar_Gupta a bit long..
No errors in that limits question? @Prakhar_Gupta Dont yu think that the Nr becomes 0 always? @pratyaksh_tyagi
Yeah , but it's 0/0 form, and we can't have a general expression for that nested root, so no LH
I dont think LH will work here...tried rationalisation?
@Naman @Jagdish_Singh @jitendra_kumar @Viraj @Viraam_Rao
Here it's expressed in terms of a general term..
And then I feel we Shud take its summation .. so pi^2 term and all will come.. but slowly then this question will slip out of scope
I feel there is a slight chance there is another way to do it
Getting pi^2 from this
I'll get the answer key today, so let's see ..
@viraj it says that the radical cannot be converted to any such typical kind of series .. and then also..it's becoming a bit weird ..
answer given is a) pi²/4