Partial derivative of the harmonic complex function

In summary, a partial derivative of a harmonic complex function is the rate of change of the function with respect to one of its independent variables. It is calculated by taking the limit of the difference quotient as the variable approaches zero. The partial derivative is a component of the total derivative, which takes into account changes in all variables. The partial derivative has significance in real-world applications, aiding in optimizing processes and predicting outcomes. It can be negative, indicating a decrease in value as the variable increases. However, this does not necessarily mean the function is decreasing overall.
  • #1
Adel Makram
635
15
For a harmonic function of a complex number ##z##, ##F(z)=\frac{1}{z}##, which can be put as ##F(z)=f(z)+g(\bar{z})##and satisfies ##\partial_xg=i\partial_yg##. But this function can also be put as ##F(z)=\frac{\bar{z}}{x^2+y^2}## which does not satisfy that derivative equation!

Sorry, I should have put this thread in homework section.
 
Last edited:
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  • #2
Actually, if F is analytic, [itex]\frac{\partial F}{\partial\bar{z}}=0[/itex].
 

Related to Partial derivative of the harmonic complex function

1. What is the definition of a partial derivative of a harmonic complex function?

A partial derivative of a harmonic complex function is the rate of change of the function with respect to one of its independent variables, while holding all other variables constant. It measures how much the function changes when only one variable is varied.

2. How is the partial derivative of a harmonic complex function calculated?

The partial derivative of a harmonic complex function can be calculated by taking the limit of the difference quotient as the variable in question approaches zero. This is equivalent to finding the slope of a tangent line to the function at a specific point.

3. What is the relationship between the partial derivative and the total derivative of a harmonic complex function?

The partial derivative of a harmonic complex function is a component of the total derivative. The total derivative takes into account the changes in all variables, while the partial derivative only considers the change in one variable. The total derivative can be found by summing all the partial derivatives.

4. What is the significance of the partial derivative in real-world applications?

The partial derivative of a harmonic complex function is useful in many fields of science and engineering, such as physics, economics, and fluid dynamics. It helps to understand how a system changes when one variable is manipulated, which can aid in optimizing processes and predicting outcomes.

5. Can a partial derivative of a harmonic complex function be negative?

Yes, a partial derivative of a harmonic complex function can be negative. This indicates that the function is decreasing in value as the variable in question increases. It is important to note that a negative partial derivative does not necessarily mean that the function is decreasing overall, as other variables may be influencing its behavior.

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