High School What does this mysterious formula found in a financial institution mean?

[DaveC426913]

Found this formula on a whiteboard. I work in a financial institution.
Can this mean something?

(I may have transcribed the handwriting poorly. The d's might be a's.)

 

[TeethWhitener]

Square the del and you get the wave equation: https://en.wikipedia.org/wiki/Wave_equation#Introduction

 

[fresh_42]

It can, e.g. https://en.wikipedia.org/wiki/Profit_maximization#Marginal_revenue–marginal_cost_perspective
But I don't know for sure. Looks like it is from a price building formula.

 

[jedishrfu]

Found this formula on a whiteboard. I work in a financial institution.
Can this mean something?
View attachment 239827
(I may have transcribed the handwriting poorly. The d's might be a's.)

It's got something to do with your future raise. :-) If you don't get it then you'll know why.