About Functions

is a function. It is integrated:
I am the function! I will integrate it!
F: Get rid of it, cockerel!
Integral is offended. The function slid further and met the differential:
D : Oh! The function! Let me differentiate you!
F: Let you go! Differential is offended.
I complained to Integral:
D: Hear, brother, I met the function – I don’t want to differentiate!
I’ve met too, I don’t want to integrate. Let’s catch it and first integrate, and then differentiate!
D: Let it go. They captured the function and told her about their dirty intentions:
Ladies and gentlemen, you got it! I "e" in degree X