horribLily
Active member
A differential operator and a function meet. The operator says, “Give me your values or I’ll differentiate you.”
The function just laughs and replies, “I’m ex.” (＾▽＾)
The function just laughs and replies, “I’m ex.” (＾▽＾)
The function totally nailed it with “I’m ex.” 
Classic math humor!