This seventh edition of Calculus includes 35 per cent new and revised exercises, and pairing of even and odd exercises. There are more exploratory and open eneded quesitons; more problems using tabular data and more emphasis on graphing calculators in exercises and examples. There is also a greater emphasis on mathematical modelling, and new sections on second order differential equations and on rotation of coordinate axes. The text is available both in single variable versions and combined single and multivariable calculus versions.