Multi-variable calculus is usually covered in 3rd semester calculus. The material covered extends the ideas of limits, derivatives and integrals to higher dimensions.
The main topics covered in multi-variable calculus are
Although you have probably learned some basics of vectors in other classes, multi-variable calculus covers a lot more applications and uses of vectors than you normally see elsewhere.
Vectors are extremely important to multi-variable calculus. You will see vectors in most of the topics.
Applications of Vectors
Vector Functions Applications are where you may have seen vectors used before. However, the notation is bit different.
Partial Derivatives apply the derivatives you already know to higher dimensions.
Since multi-variable calculus involves integrating in higher dimensions, you will be expected to know how to work with two other coordinate systems (other than rectangular).
Partial Integrals take your integrals knowledge to the next level with double and triple integrals.
This last section of multi-variable calculus takes your calculus to a whole new level. There are really no new techniques to learn once you have worked through the previous ones in the course. You learn how to apply the techniques to new areas, like path, line and surface integrals. Notation is what troubles most students in this last section of calculus.
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