Question

prove that (d^2/dx^2 +d^2/dy^2) |Real f'(z)|^2= 2|f'(z)|^2​

Answer 1

Answer:

dy  

2

 

d  

2

x

​  

=  

dy

d(  

dy

dx

​  

)

​  

=  

dx

dy

​  

 

dx

d(  

(  

dx

dy

​  

)

1

​  

)

​  

 

​  

=  

dy

dx

​  

×  

(  

dx

dy

​  

)  

2

 

−1

​  

×  

dx  

2

 

d  

2

y

​  

=−  

dx  

2

 

d  

2

y

​  

(  

dy

dx

​  

)  

3

Step-by-step explanation: