On deck he had overborne my stubborn perplexity by dint of a forced though forceful joviality; in his cabin the gloves were off. View in context Underneath was a man of iron, square-jawed, nervous, forceful.
Delta is a letter of the Greek alphabet with several different mathematical meanings. Learn about the functions of delta, what it looks like, and how you can use delta in your mathematical expressions in this lesson.oth meanings being with the letter D just like the Greek letter, which should help you remember them: 1  Difference is the most common meaning of the uppercase delta. 2  Discriminant is the second most common meaning of the uppercase delta.
Mark has 60+ answers in. Mathematics. Epsilon is just a Greek letter that's used by mathematicians when they've run out of Roman letters. Normally only the lower-case version, [math]\epsilon[/math], is used, because the upper-case version is not distinctive: E. Probably the most famous use is in the so-called epsilon-delta definition of a limit (see (Îµ, Î´)-definition of limit). Roughly, a function f(x) has the limit l as x approaches a if, for any small range delta, you can make f(x) be closer than delta to l by picking x within epsilon of a. So epsilon is sometimes used as a metaphor for a very small error range around a point.