Let f(2) = y variable defin exist?

Linear Algebra: A Modern Introduction
4th Edition
ISBN:9781285463247
Author:David Poole
Publisher:David Poole
Chapter4: Eigenvalues And Eigenvectors
Section4.6: Applications And The Perron-frobenius Theorem
Problem 69EQ: Let x=x(t) be a twice-differentiable function and consider the second order differential equation...
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Question no 1.

1. Let f(z) = y
variable defined in the whole complex plane. For what values of z does f'(2)
2xy + i(-x + x² – y²) + z² where z = x + iy is a complex
exist?
Transcribed Image Text:1. Let f(z) = y variable defined in the whole complex plane. For what values of z does f'(2) 2xy + i(-x + x² – y²) + z² where z = x + iy is a complex exist?
Expert Solution
Step 1

The given function fz=-y-2xy+i-x+x2-y2+z2

Here, z=x+iy.

Therefore,

fz=-y-2xy+i-x+x2-y2+x+iy2fz=-y-2xy+i-x+x2-y2+x2-y2+2xiyfz=-y-2xy+x2-y2+i-x+x2-y2+2xy

Let the function is analytic function u+iv.

u=-y-2xy+x2-y2

v=-x+x2-y2+2xy

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