Maths Revision

• Number systems:
• ancient (roman, Greek, Mayan, Egyptian )
• binary (110 001 010)
• hexadecimal
  
  
  
• conversions

• Prime numbers:
• A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural number.

• Square numbers:
• The product of an integer of itself
• 1,4,9,16
• Rational and Irrational:
• a number described as rational if it can be written as a fraction. the decimal form of a rational number has either a terminating or a recurring decimal. Examples of rational numbers are 17, -3 and 12.4. 
• Pi π
• ratio of a circles circumference to its diameter
• 3.14159
• irrational
• any functions that involve circles or spheres or sometimes waves

        circumference: Pi x diameter

        diameter: circumference / Pi

        radius: circumference / 2 Pi

        area: Pi x Radius2

        surface area: 4 x Pi x radius2

        volume: (4/3) x Pi x radius3

• Euler's number e
• it is the limit of (1+1/n)n as n approaches infinity, an expression that arises in the study of compound interest
• interest, calculus

 

• Matrices
• a matrix is a rectangular array or table of numbers, symbols, or expressions, arranged in rows and column
• when working with matrices, rows then columns
• matrices division
  

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