Let f : CC be the function defined by f(z+iy)=2z-iy (z, y R). By using only...

 

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Let f : CC be the function defined by f(z+iy)=2z-iy (z, y R). By using only definition, show that f is not differentiable anywhere in C. You will receive 0 mark if you use any other method including Cauchy-Riemann equations. Here i is the complex number such that 2=-1 Let f : CC be the function defined by f(z+iy)=2z-iy (z, y R). By using only definition, show that f is not differentiable anywhere in C. You will receive 0 mark if you use any other method including Cauchy-Riemann equations. Here i is the complex number such that 2=-1