Solve Diff Eqn Problem: Find Lamda for y=exp(Lamda x)

[Quadruple Bypass]

well I am confused on what the problem is saying:

"For what value(s) of the constant (lamda) will y = exp((lamda)x) be a solution of the given differential equation? If there are no such (lamda)'s, state that."

what the hell is y = exp? if exp is an exponent, would that, differentiated, be 0?

any help would be appreciated :)

 

[Quadruple Bypass]

ah, just found out what it means. for some reason the book didnt say that e is written as exp in ch 1, but instead says so in ch 21. go figure