👉 The term "red integrating" refers to an integral that is defined by a function of two variables, where the integrand functions are given as being continuous and differentiable in both variables. This type of integral is often used when dealing with certain types of mathematical problems involving multiple variables or when the integrand is not straightforwardly expressed in terms of single-variable functions. Red integrating is useful for solving many types of differential equations that involve multiple variables, making it a powerful tool in various fields such as engineering
