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 is the science of counting and manipulating of numbers and numerical concepts. It ranges from simple arithmetic, to geometric shapes, to complex variables and calculation â¦ s that describe time, space, and motion. Do the Math with an Online Calculator For many people, whether in school or out, math is the bane of their existence. 2  Many an hour has been spent in math class by students wondering when this particular skill wouâ¦.