matlab如何求復數的相位角

atan angle phase 三個都壹樣啊，沒啥區別，而且返回值都是弧度

atan Inverse tangent, result in radians.

atan(X) is the arctangent of the elements of X.

angle(H) returns the phase angles, in radians, of a matrix with

complex elements.

phase Computes the phase of a complex vector

>> [phase(2+i),atan(1/2),angle(2+i)]

ans =

0.4636 0.4636 0.4636

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