Factorial Function - Math is Fun
The factorial function (symbol: !) says to multiply all whole numbers from our chosen number down to 1. Examples:
Gamma Function - Math is Fun
The factorial function (symbol: !) says to multiply all whole numbers from our chosen number down to 1. Examples:
Binomial Theorem - Math is Fun
But how do we write a formula for "find the coefficient from Pascal's Triangle"... ? Well, there is such a formula: It is commonly called "n choose k" because it is how many ways to choose k elements from a set of n. The "!" means "factorial", for example 4! = 4×3×2×1 = 24. You can read more at Combinations and Permutations.
Prime Factorization - Math is Fun
A "Factor Tree" can help: find any factors of the number, then the factors of those numbers, etc, until we can't factor any more. Example: 48 48 = 8 × 6 , so we write down "8" and "6" below 48
Scientific Calculator - Math is Fun
sqrt: Square Root of a value or expression.: sin: sine of a value or expression : cos: cosine of a value or expression : tan: tangent of a value or expression : asin: inverse sine (arcsine) of a value or expression
Sigma (Sum) Calculator - Math is Fun
It is used like this: Sigma is fun to use, and can do many clever things. Learn more at Sigma Notation.. You might also like to read the more advanced topic Partial Sums.. All Functions
Normal Distribution - Math is Fun
When we calculate the standard deviation we find that approximately: 68% of values are within 1 standard deviation of the mean . 95% of values are within 2 standard deviations of the mean . 99.7% of values are within 3 standard deviations of the mean . Example: 95% of students at school are between 1.1m and 1.7m tall.
Percentage Calculator - Math is Fun
Learn how to calculate a percent of a value before and after, or find the percentage change between two values, and see how to calculate each one.
Pascal's Triangle - Math is Fun
The "!" is "factorial" and means to multiply a series of descending natural numbers. Examples: 4! = 4 × 3 × 2 × 1 = 24; 7! = 7 × 6 × 5 × 4 × 3 × 2 × 1 = 5040; 1! = 1
Trigonometric Identities - Math is Fun
sin 2 θ means to find the sine of θ, then square the result, but; sin θ 2 means to square θ, then do the sine function