1. The problem statement, all variables and given/known data Hey everyone, I've data for some oscillatory motion. I used matlab to find line of best fit for the data. I got a line of the following form y = A*sin(2*pi*f*t + ø) I got the root mean square error between my data and the line of best fit (call it u_y) Now I want to differentiate the above equation to get the velocity V = dy/dt. How do I get the uncertainity for V? 3. The attempt at a solution I'm really stuck. I'm trying to use Kline Mcclintock error propagation to solve for uncertainty of the Velocity. V = dy/dt u_v = √( (dv/dy * u_y)^2 + (dv/dt*u_y)^2 ) Is this the right approach??