One meaning of forceful is all about physical strength: The forceful throw carried the football past the goalposts. Another way to be forceful is to be emphatic or vehement: The child's forceful refusal to go to bed could not be ignored by the sleepy babysitter. Forceful literally means full of force, and force comes from the Latin fortis, strong, firm, or steadfast.
In addition to being the 18th letter of the Greek alphabet, sigma also means 'sum' and 'deviation' in the mathematics world. Learn what each symbol looks like and how each formula works. High School Precalculus: Homework Help Resource / Math Courses.
Math Symbols Mathematics is an exact science where there is no margin for error no matter how minute. Mathematics is generally an abstract study of space, quantity, change and structure. It is the science that resolves âwhat is trueâ or âwhat is falseâ, with the use of formulations and patterns.