Task

Show how to use the following math constants and functions in your language   (if not available, note it):

   e   (base of the natural logarithm)
   



π


{\displaystyle \pi }


   square root
   logarithm   (any base allowed)
   exponential   (ex )
   absolute value   (a.k.a. "magnitude")
   floor   (largest integer less than or equal to this number--not the same as truncate or int)
   ceiling   (smallest integer not less than this number--not the same as round up)
   power   (xy )


Related task

   Trigonometric Functions


e‬: exp(1)
pi: pi
square root: sqrt(x)
logarithm: log(x)
exponential (‪ex‬): exp(x)
absolute value: abs(x)
floor: floor(x)
ceiling: ceil(x)
power: x^y