TOPICS
Search

Cis


CisReImCisContours

Cis(x) is another name for the complex exponential,

 Cis(x)=e^(ix)=cosx+isinx.
(1)

It has derivative

 d/(dz)Cis(z)=ie^(iz)
(2)

and indefinite integral

 intCis(z)dz=-ie^(iz).
(3)

See also

Cosine, Exponential Function, Phasor, Sine

Explore with Wolfram|Alpha

WolframAlpha

More things to try:

Cite this as:

Weisstein, Eric W. "Cis." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/Cis.html

Subject classifications