Enter cells A 1, B 1 and C 1 in a, b and c, respectively. Enter the formula =A 1+B 1+C 1 in D 1. When you enter abc, D 1 automatically displays their sum.

Elementary mathematics studies constants and uniform variables, while advanced mathematics studies non-uniform variables. Advanced mathematics (the general name of several courses) is an important basic subject in science and engineering colleges, and it is also a compulsory mathematics course for non-mathematics majors in science and engineering, as well as a compulsory course for other majors.

Characteristics of advanced mathematics course:

Generally speaking, advanced mathematics is a basic subject formed by calculus, algebra, geometry and their intersection after17th century. Compared with elementary mathematics and secondary mathematics, mathematics is more difficult to learn, which belongs to university courses, so it is often called "advanced mathematics" and "calculus" in teaching materials, which is a different major of science and engineering.

Students majoring in literature and history learn mathematics shallowly, and different majors in literature and history have different depths. It is advanced mathematics that studies variables, but advanced mathematics does not only study variables. As for the courses related to "advanced mathematics", there are usually: linear algebra (advanced algebra for mathematics majors), probability theory and mathematical statistics (some mathematics majors study independently).