isi 2013 URGENT

[gauri]

ques  21 .
someone please tell me how to go about it

[Sinistral]

that series wala ques ??

break the series into 2 parts --

(a^2 +ab)  + (a^4 +(ab)^2) + (a^6 +(ab)^3) + ......
= (a^2 + a^4 + a^6 + ...       ) + (   ab + (ab)^2 + (ab)^3) + ..... )
summing both the above infinite series gives option C

[a]

can u plz solve ques 10 of me 2, isi 2013

[Ayushya Kaul]

Same request! ANyone?

[Sinistral]

take each of the options and check whether it satisfies the given properties of f
eg option (a) f(x,y) = m+ xy
replace x by x and y by y+k ie f(x, y + k) = m+x(y+k)= m+xy+kx=f(x,y)+kx : satisfies.
note that it also satisfies remaining 2 properties (given)

option b and c doesn't satisfy

hence option a

[Ayushya Kaul]

We were asking about Q10 from ME II not I :/