What is the best calculus book for a strong introdutory course? I'm teaching for a small group of future undergraduate science students. I'm from Brazil, so here, we don't see any calculus in school, Just definition of function and some properties of most known functions of a real variable, everything very simplified.
I) I want to reintroduce this functions in a way that it will be more useful for a future calculus course at university. (Pre Calculus or first chapter of calculus books).
II) I want to teach the concepts of limits, and derivatives with some formal approach.(Because they will study sciences). I want to give some interesting applications of functions, limits and derivatives(Because they are not going to a pure math course).
What I need It's a list (1,2 or 3) of books that fits in:
1)Mathematically strong calculus books, with some good pre calculus on it: (Write your list 1, 2 or 3 books).
2)Book of calculus that has some good applications in physics/economics: (Write another list 1,2 or 3 books ).
OBS: I don't know english language calculus books, so I don't even can compare this books.
 A: I would recommend Paul's Online Math Notes. These notes cover a wide variety of preliminaries and I believe they will prove to be useful to your students even in their undergraduate education. 
A: I recommend "Calculus: Early Transcendentals" (Stewart).
I'm currently studying by it, and while I haven't gotten very far, I do like the teaching style: abstract when appropriate, yet filled with concrete examples.
Here's the ToC:


*

*Functions and models

*Limits and derivatives

*Differentiation rules

*Applications of differentiation

*Integrals

*Applications of integration

*Techniques of integration

*Further applications of integration

*Differential equations

*Parametric equations and polar coords

*Infinite sequences and series

*Vectors and the geometry of space

*Vector functions

*Partial derivatives

*Multiple integrals

*Vector calculus

*Second-order differential equations


In case you want a more detailed ToC, "peek" into the book in the link above.
Regarding the introduction (chapters 1 and 2): Stewart does a great job not expecting much prior knowledge from the student, aside from algebra. Limits are well-covered in chapter 2.
