InterviewSolution
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InterviewSolution
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What are variable why used variable |
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Answer» for a number we don't know yet. It is usually a letter like x or y.Example: in x + 2 = 6, x is the VARIABLE.Why "variable" when it may have just one value? In the case of x + 2 = 6 we can solve it to find that x = 4. But in SOMETHING like y = x + 2 (a linear EQUATION) x can have many values. In general it is much easier to always call it a variable even THOUGH in some cases it is a single value. |
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