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


math:e   // e
math:pi  // pi
sqrt(x)  // square root
log(x)   // natural logarithm
log10(x) // base 10 logarithm
exp(x)   // e raised to the power of x
abs(x)   // absolute value
floor(x) // floor
ceil(x)  // ceiling
x ^ y    // exponentiation