I need help finding the derivative of the following equation. This may look a little messy because it involves a square root and a fraction. y = square root of: 1 + x2 / 3 + 3 - x / 5 My first thought is to change the equation to look like this: y = (1 + x2)1/2 / 3 + 3 - x / 5 but I am not sure what the proper protocol is for finding a derivative of this kind of equation. An example is given of a similar question: y = square root of: 1 + x2 / 3 + 0.5 - x / 5 where the derivative is: dy/dt = 1/6 (1 + x2)- 1/2 (2x) - 1/5 but I can't figure out where the 1/6 comes from, or the final term, 1/5. Help please?