We can get two lines as well brother @SHAKTI_MAYANK_SINGH
It will be of the from a+kB=0
For the other one...the answer should be A and B.
Do let me know if you have any doubts.
@SHAKTI_MAYANK_SINGH the answer is not coming in integer for Q.1
Will you please give me your solution by any alternative method.
I also used the same method as urs..but u did the mistake of only differentiating the denominator..as numerator also has \lambda in it.
Still my answer for a+b+c is coming 18 only..and I guess the question is wrong.
Answer of que 1 is 2 okay then that won't be 19 it must be 9 then maybe
My lambda is coming out to be -7/26. What is actual value of lambda..??
In response to the uploaded pic, in that i committed a calculation mistake. Now here is the correct and proper solution...please go through it.