+, -, *, /^ for exponentiation. E.g., a^2 means a squared.sin(x), cos(x), tan(x)log(x) for natural logarithmexp(x) for exsqrt(x)|x| becomes abs(x)You can combine these functions with variables a and b. For example: sqrt(a^2 + b^2) or exp(-a) * cos(b).