I'm having a tough time understanding uncertainties and the concept of how to find the absolute and relative uncertainties of functions. I understand how to find the relative and absolute uncertainties in problems like 40±2 m (The absolute uncertainty is 2m and the relative is 0.05 if I'm not mistaken). But I don't remotely understand how to apply this concept to functions. I'm sorry I don't have an exact question I'm having difficulty with so I'll have to just create some of these questions. For example: -Find the absolute and relative uncertainty of the sine of 30±0.03 deg. -Find the absolute and relative uncertainty of log(10.7±0.3) -Find the absolute and relative uncertainty of ln(6.2±0.4) I just want to understand the concept of how uncertainties work and how to approach uncertainties regarding functions such as sin,cos, and ln. Any help is greatly appreciated.