One thing that's problematic with this approach is the assumption that dx is a small constant. Its not, it represents a limit, specifically a value approaching 0. Look at the quantity (x + dx)^2. By expanding the terms…
One thing that's problematic with this approach is the assumption that dx is a small constant. Its not, it represents a limit, specifically a value approaching 0. Look at the quantity (x + dx)^2. By expanding the terms…