` E(x) = text{ ent(x) : Fonction partie entière } `
` sqrt(x+1) = text{ racine(x+1)`
`2x^3= text{ 2*puissance(x,3)}`
` abs(x+1)= text{ abs(x+1)}`
`arctan(x+1)=text{ arctan(x+1)}`
`(3x+abs(x))/(x^2)= text{ (3*x+abs(x))/(x*x)}`
`e^x = text{ e(x)}`
`pi = text{ pi } e =text{ e(1)} `