Function Description sqrt(x) square root of x pow(x, y) xy sin(x) sine of x (in radians) cos(x) cosine of x (in radians) tan(x) tangent of x (in radians) exp(x) ex log(x) (natural log) ln(x), x > 0 log10(x) (decimal log) lg(x), x > 0 ceil(x) smallest integer >= x floor(x) largest integer <= x fabs(x) absolute value |x|