Hello reader, Here is a simple problem, (i2+i3)-(i1+i4) X ------------- = --- i1+i2+i3+i4 5 And (i2+i4)-(i1+i3) Y ------------- = --- i1+i2+i3+i4 5 Also, i1+i2+i3+i4 = E Can I find out i1, i2, i3 and i4 if I know X, Y and E? What is the relation? I tried with excel but could not do! Thanks in advance!
gotumal, What does --- mean? Are X,Y, and E constants? What does i1+i2+i3+i4 5 mean? It looks like you have 3 equations for at least 4 unknowns. What does that tell you? Ratch
The equations were, [(i2+i3)-(i1+i4)]/[i1+i2+i3+i4]= X/5 And [(i2+i4)-(i1+i3)]/[i1+i2+i3+i4] = Y/5 Also, i1+i2+i3+i4 = E I want to find out i1, i2, i3 and i4 with the values X, Y and E. Actually there is a sensor which gives you the co-ordinates (X and Y) of a light spot faliing on it. And i1, i2, i3 and i4 are the four outputs. I was checking if it can be done reversed for my calculations. Apart from above relation, there is more info like, 1. When (X,Y)=(0,0); i1=i2=i3=i4=E/4 2. When (X,Y)=(5,5),i2=E 2. When (X,Y)=(-5,5),i4=E 2. When (X,Y)=(5,-5),i3=E 2. When (X,Y)=(-5,-5),i1=E Can we have another equation since we have four variables? X and Y co-ordinates range which I am interested is -5 to +5.
Thanks someonesdad. OK, let me put it in other way, I have a equation N/D = X/5 X range -5000 to +5000 N range -D to D (so the ranage of N/D -1 to +1) D range 1000 to 10000 Now if I want to calculate X in the given range with step size of 1.5 i.e. total no. of results would be 10000/1.5 and not the coninous one, Then what should be the mimimum step size of N and D