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Scilab help >> Elementary Functions > Trigonometry > sec

sec

Compute the element-wise secant of the argument.

Calling Sequence

y = sec(x)

Arguments

x

Real or complex array.

y

Real or complex array.

Description

Compute the element-wise secant of the argument. The secant is a periodic finction defined as 1/cos. For real data the results are real and in ]-%inf -1] U [1 %inf[.

Examples

x=[0 %pi/3 2*%pi/3 %pi/4 3*%pi/4 %pi/6 5*%pi/6 %pi];
sec(x)
x=linspace(-%pi,%pi,100)
plot(x,sec(x))

See Also

  • cos — cosine function
  • secd — Compute the element-wise secant of the argument given in degree.

Authors

  • Serge Steer, INRIA

Used Functions

This function uses the cos function.

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Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
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Last updated:
Thu May 12 11:44:14 CEST 2011