Manuals/calci/SINC

SINC(X)

• $X$ is any real number.

Description

• This function shows the value of the cardinal sin function.
• In $SINC(X)$, $X$ is any real number.
• The full name of the function is sine cardinal,but it is commonly referred to by its abbreviation, Sinc.
• The unnormalized SINC function is defined by :

$SINC(X)={\begin{cases}1&forx=0\\{\frac {Sinx}{x}}&Otherwise\\\end{cases}}$

• The normalized SINC function is defined by $SINC(X)={\frac {SIN\pi x}{\pi x}}$ .
• The value at x = 0 is defined to be the limiting value Sinc(0) = 1.
• The only difference between the two definitions is in the scaling of the independent variable (the x-axis) by a factor of π.

Examples

1. SINC(9) = 0.04579094280463962
2. SINC(-34) = 0.015561255474118348
3. SINC(-51.7) = 0.019163025320677915

See Also

• SIN
• SINH
• ASINH

References

• SinC

• List of Main Z Functions
• Z3 home