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166 Using mathematical functions

student_cdf Cumulative student's t distribution function. Returns the

lower-tail probability of the student's t probability density

function at x, given n degrees of freedom.

student_cdf(n, x)

Example:

student_cdf(3, –3.2) returns

0.0246659214813.

student_icdf Inverse cumulative student's t distribution function. Returns

the value x such that the student's-t lower-tail probability

of x, with n degrees of freedom, is p.

student_icdf(n, p)

Example:

student_icdf(3, 0.0246659214813) returns 3.2.

Hyperbolic trigonometry

The hyperbolic trigonometry functions can also take

complex numbers as arguments.

ACOSH Inverse hyperbolic cosine : cosh

–1

ACOSH(value)

ASINH Inverse hyperbolic sine : sinh

–1

ASINH(value)

ATANH Inverse hyperbolic tangent : tanh

–1

ATANH(value)

COSH Hyperbolic cosine

COSH(value)

SINH Hyperbolic sine.

SINH(value)

TANH Hyperbolic tangent.

TANH(value)

ALOG Antilogarithm (exponential). This is more accurate than

10^x due to limitations of the power function.

ALOG(value)

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