Advanced engineering mathematics by erwin kreyszig 9th editi?

Answer 1

Yes, what about it ?
I have a copy of Kreyszig's Advanced Engineering Math. Just now, I'm not sure what edition,
or where in the house it's located. But I kept all of my Engineering and Math textbooks, and
I remember seeing my Kreyszig somewhere around here not too long ago.
Wherever it is, my copy is guaranteed to be in factory-fresh, mint condition. I never wrote or
underlined in any of my textbooks, and Kreyszig is one of several that I scrupulously avoided
opening during the course. Those were the books that made me what I am today.

Answer 2

Placing a question mark at the end of a phrase does not make it a sensible question. Try to use a whole sentence to describe what it is that you want answered.