I think formulas in section Error propagation (analytical) were a bit unclear.
For example, the uncertainty formula for multiplication was meant for two independent variables, and thus is not suitable for verifying assignment 1, with an $r^2$ in the denominator.
My suggestion is to specify that the formulas are for independent variables, or use this formula https://wikimedia.org/api/rest_v1/media/math/render/svg/7a7686692e58c0857185c50e2146a153449bade3. It requires to take partial derivative of each variable involved, avoiding the issue above.
I think formulas in section Error propagation (analytical) were a bit unclear.$r^2$ in the denominator.
For example, the uncertainty formula for multiplication was meant for two independent variables, and thus is not suitable for verifying assignment 1, with an
My suggestion is to specify that the formulas are for independent variables, or use this formula https://wikimedia.org/api/rest_v1/media/math/render/svg/7a7686692e58c0857185c50e2146a153449bade3. It requires to take partial derivative of each variable involved, avoiding the issue above.