Is the function u(x, y) harmonic? Why is harmonic function? Calculate the analytical function f(z)=u(x, y)+iv(x,y) if the answer is positive. u(x,y)= -3x2+3y2+3y

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Domain

In simple mathematics terms, a domain is defined as the space on which all the possible inputs for the function will lie. It can also be expressed as a set of departures for the required function.