We represent a complex number in XY plane. real part is along or parallel to X axis and imaginary part is along or parallel to Y axis.e.g. Let us say you represent a land map as complex plane.say village B is x+jy distance from village A. x is distance along east ( displacement to west considered -ve)and y along north. You can cover the distance by 3 sessions of drive say. a+jb, c+jd, e+jf Thenat the same distance.
Real and imaginary parts must separately balance on both sides.
i.e. x=a+c+e and y=b+d+f If both are not satisfied you will not reach B.
If there is a village C such that AC=j(x+jy) ,C will be located such that
You're going to have to give a simpler example, until I can wrap my head around it ?
usually mathematicians use i and engineers use j . Both mean the same thing. 4+5i is represented by distance 4 along x axis and distance 5 parallel to y axis.You can say an "i" attached with a number rotates the vector by 90^0.
interestingly 4 i^2 means vector 4 along x axis is rotated by 180^0 and becomes -4 . this tallies with the concept that i^2=-1.
What if I write a formula 34j, what is that, literally, besides the number 34 ?
If someone asks you, what is the dimensions of the hair dryer, you could tell them the height and the width of the part you hold; you could then measure the height and width of the part in which the air comes out, then again, you could just tell them the volume in which the hair dryer occupies. No the handle is not, suppose 5.2" but the part in which the air is released, is 5.2".
You can not simply derive measurements such as height, width, and depth for a complicated shape such as a human body or car with more data. Even if you had this data, its extremely difficult to do. If your object was simple such as a cube, cylinder, or triangle and had more data,... we could calculate this a lot easier.
Not knowing any more than just the SA of say a box,... we can derive dimensions for say a box but there are infinitely many dimensions. This means the box can be of any shape or even size. If you give us the SA, L, and W, we can calculate the depth for example. If you only give the SA and L, that would mean the width and depth would be infinite.
I understand. A program I use only gave me those measurements from a irregular object, the program must be getting the information some how, some way, that is what I want to know ?
We both can agree that the program is not spitting out a random value for the surface area of the object !
Those would be tricky to work out. There's no easy formula as people and cars have many shapes.
You could estimate by making a square grid and holding it against the surface and counting up squares. Hard to be accurate though.
There are formulas for some solids: sphere, cone, pyramid etc.
What if you pretended as though the car, or person was contained, I believe as you are saying in a solid shape; as in a cube etc, that would work ?