Hello welcome to chafia physic. In this post i just want to share with you some problem that related with complex number and How to find a complex Number in polar Form . In this post we will also discussing about Function of complex variable with some sample question related with it. Ok first let's we start discussing about a complex number. A.Origin of Complex Number During our time in school we faced so many function and equation that describe something. Just for an example: we can describe free fall motion with quadratic equation like this. if x is t and a is -g now we can find how long a ball or a thing, fallen from initial heigth c. Now lets just focusing on quadratic equation. In this equation we can find x with abc formula, and from the abc formula we will get to value of x related with equation. Suppose we set the equation and get b quared is less than 4ac. As yo can see, in our x now containt i, where i is square root of -1. i is imaginary number, this nu...