Please help. Is $f(z) = \sec(z)$ analytic?
I do know that I have to test if the cauchy riemann equations hold. That is $U_x = V_y$ and $U_y = -V_x$
But I have trouble expressing $f(z)$ in the form $f(z) = u(x,y) + iv(x,y)$
2026-03-30 20:57:57.1774904277
Is the complex function $f(z) = \sec z$ analytic?
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