Machine-translated by Google. Questions are authored in English.
Top

Discussion

Is \( f(z) = \bar{z} \) analytic anywhere in the plane?

  • A.Yes, but only on the real axis
  • B.Yes, except at the origin where it is undefined
  • C.No, the Cauchy-Riemann equations failing at every point
  • D.Yes, everywhere, the function being continuous throughout

Answer: C

Here \( u = x \) and \( v = -y \), so \( u_{x} = 1 \) while \( v_{y} = -1 \):

\[ u_{x} \;=\; 1 \;\neq\; -1 \;=\; v_{y}. \]

The first Cauchy-Riemann equation fails at every point, so the conjugate is nowhere analytic despite being continuous everywhere. Continuity is no guarantee of complex differentiability

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.