Scientific Functions
The following procedures accept any kind of number as arguments, including complex numbers.
Scheme Procedure: sqrt z
Return the square root of z. Of the two possible roots (positive and negative), the one with a positive real part is returned, or if that’s zero then a positive imaginary part. Thus,
(sqrt 9.0) ⇒ 3.0
(sqrt -9.0) ⇒ 0.0+3.0i
(sqrt 1.0+1.0i) ⇒ 1.09868411346781+0.455089860562227i
(sqrt -1.0-1.0i) ⇒ 0.455089860562227-1.09868411346781iScheme Procedure: expt z1 z2
Return z1 raised to the power of z2.
Scheme Procedure: sin z
Return the sine of z.
Scheme Procedure: cos z
Return the cosine of z.
Scheme Procedure: tan z
Return the tangent of z.
Scheme Procedure: asin z
Return the arcsine of z.
Scheme Procedure: acos z
Return the arccosine of z.
Scheme Procedure: atan z
Scheme Procedure: atan y x
Return the arctangent of z, or of y/x.
Scheme Procedure: exp z
Return e to the power of z, where e is the base of natural logarithms (2.71828…).
Scheme Procedure: log z
Return the natural logarithm of z.
Scheme Procedure: log10 z
Return the base 10 logarithm of z.
Scheme Procedure: sinh z
Return the hyperbolic sine of z.
Scheme Procedure: cosh z
Return the hyperbolic cosine of z.
Scheme Procedure: tanh z
Return the hyperbolic tangent of z.
Scheme Procedure: asinh z
Return the hyperbolic arcsine of z.
Scheme Procedure: acosh z
Return the hyperbolic arccosine of z.
Scheme Procedure: atanh z
Return the hyperbolic arctangent of z.