On Oxy lab computers: click Start > All Programs > Mathematics > Mathematica
Once Mathematica is open, click: File > Palettes > Basic Input.
In the Palette that opens (or may already have been open), click on the Definite Integral button (see below).
You can click on and type inside each of the "input boxes" of the Integral (can also use Tab and Shift-Tab to move between them).
Make friends with the F1 key (Help)
Press Shift-Enter, not just Enter.
Must capitalize names of "known functions" (see below).
Must use square brackets around function arguments. (But use parentheses for "grouping together" other expressions, as we do normally.)
Examples:
To solve initial value problems, look up DSolve.