Across
- 2. numbers: pairs of numbers for which the sum of the divisors of one number equals the other number, e.g. 220 and 284, 1184 and 1210
- 4. a step by step procedure by which an operation can be carried out
- 7. a polynomial algebraic expression or equation with just two terms, e.g. 2x3 - 3y = 7; x2 + 4x; etc
- 10. of variations: an extension of calculus used to search for a function which minimizes a certain functional (a functional is a function of a function)
Down
- 1. (mathematical analysis): grounded in the rigorous formulation of calculus, analysis is the branch of pure mathematics concerned with the notion of a limit (whether of a sequence or of a function)
- 3. two geometrical figures are congruent to one another if they have the same size and shape, and so one can be transformed into the other by a combination of translation, rotation and reflection
- 4. expression: a combination of numbers and letters equivalent to a phrase in language, e.g. x2 + 3x - 4
- 5. number: a number with at least one other factor besides itself and one, i.e. not a prime number
- 6. a branch of mathematics that uses symbols or letters to represent variables, values or numbers, which can then be used to express operations and relationships and to solve equations
- 8. number: a number expressed as an ordered pair comprising a real number and an imaginary number, written in the form a + bi, where a and b are real numbers, and i is the imaginary unit (equal to the square root of -1)
- 9. probability: a popular interpretation of probability which evaluates the probability of a hypothesis by specifying some prior probability, and then updating in the light of new relevant data