# Hyperbolic Trigonometry - HP 39gII User Manual

Graphing calculator.

student_cdf
student_icdf

## Hyperbolic trigonometry

ACOSH
ASINH
ATANH
COSH
SINH
TANH
ALOG
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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.
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.
The hyperbolic trigonometry functions can also take
complex numbers as arguments.
Inverse hyperbolic cosine : cosh
ACOSH(value)
Inverse hyperbolic sine : sinh
ASINH(value)
Inverse hyperbolic tangent : tanh
ATANH(value)
Hyperbolic cosine
COSH(value)
Hyperbolic sine.
SINH(value)
Hyperbolic tangent.
TANH(value)
Antilogarithm (exponential). This is more accurate than
10^x due to limitations of the power function.
ALOG(value)
–1
x.
–1
x.
–1
x.
Using mathematical functions