Numerical Methods, Mathematical Analysis, Programming, Functional Analysis.
positive or always negative, it has no real root. For example f(x) = exp(x): f(x) = exp(x) Even though f(x) = exp(x) is very close to zero when x → -∞, in fact, f(x) is never equal to zero. Finally, f(x) = ln(x) is a legitimate example of a continuous function with one real root: f(x) = ln(x) About