New posts in Elementary Functions

Proof of the derivative of an elementary function is also elementary

Does a function from the empty set to the empty set exist?

Are there any elementary functions $\beta(x)$ that follows this integral $\int_{y-1}^{y} \beta(x) dx =\cos(y)$

Is there a smooth, preferably analytic function that grows faster than any function in the sequence $e^x, e^{e^x}, e^{e^{e^x}}...$

Elementary proof that $2^x$ is derivable

What is a good way to explain why the graph of polynomials do not exhibit ripples, even in an arbitrarily small interval?

Why do all elementary functions have an elementary derivative?

What kind of functions cannot be described by the Taylor series? Why is this?

Proof of Fresnel's Integral

Rational function approximation to square root