Question

What did the author horlive in the mail?
(a Shott monsooch Diary)​

Answer 1

Explanation:

7.(a) If u=log((x^(4)+y^(4))/(x+y)), show that: x(del u)/(del x)=y(del u)/(del y)=3

Answer 2

Answer:

the author received cheque in the mail