1hey, in the Q, it should be t+1/t and not minus...
5 Answers
11dude this condition is not possible
so forget about its derivative.
look
u got
x4+y4+2x2y2= t2+ 1/t2-2
after putting
x4+y4=t2+ 1/t2
so we have
x2y2=-1
which is not possible[1]
62amit can you tell the source of this question, there is definitely something wrong here!
1bhaiya, its there in R.D. sharma, the exactly same Q, but only with "+" sign....if he doesnt agree, or sm other buk has a misprint, then wt cn ny1 do?