Something about Errors!!!

Errors are very important in engineering!!! ACCURACY is vital!

They are defined as "The difference between an observed value and the true value of a quantity" And it´s very important to notice how representative are they...

Do you know what types of error are there???

But talking about the practice, the most common definitions are Relative Approximate Error....

And True Error:

I'm sure this will be very usefull comparing the numerical methods!....