Hello. I feel like this should not be too difficult but I am sturggling with it.. Im trying to find the value calculated with an equation every minute, up to 15 minutes (equations uses seconds). The first equation starting at 0 seconds using a constant value already given (denoted as 'r_NaCl') but every other iteration will use the previously calculated value in the place of the r_NaCl. This was my try but it is not working. I then need to plot it which I can do but this attemp gives me an x1 that is 1x16 and y1 that is 1x31 and im not sure why. Thank you in advance for your help!