Finney, R. L., Giordano, F. R., Weir, M. D., Thomas, G. B., Jr., & Calculus and analytic geometry. (2001). Thomas’ calculus (Tenth edition / based on the original work by George B. Thomas, Jr.,as revised by Ross L. Finney, Maurice D. Weir, and Frank R. Giordano.). Addison-Wesley.
y is called the function of x if, $y = f(x)$, where $x$ is the independent variable and $y$ is the dependent variable. We can have range of values of x termed domain as similarly range of output values.
Functions can be plotted on the graph.
We can also have sums, differences, products and quotients for functions.
One or two functions can be combined to form composite functions.
Even and Odd functions:
