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...Further maths matrix summary a is rectangular array of numbers arranged in rows and columns the are called elements order number example by or as it has matrices often denoted capital letters types column row null zero all note that identity for addition f square same diagonal non leading only small with subscripts where two equal when they have corresponding if then b subtraction can be added subtracted simply adding subtracting calculate i ii you easily do above calculations on calculator multiplying multiplied first second product exists will find since so x which does not exist general multiplication important unequal equations except those examples always any remain unchanged like normal changed notice leaves this an exception to rule inverse multiply get answer ie we say multiplicative also...