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Why #2

ValeryOchkov
24-Ruby IV

Why #2

Why2.png

1 REPLY 1

Writing f(x):=... makes x an arbitrary variable - more precisely: the formal argument of the function. That way it has nothing to do with the variable x you defined earlier. So the attempt of the numerical evaluation therefore had to fail.

If you write f(x)= after defining the function, that x is the current argument of the function and for numerical evaluation it has to be either a constant value or a variable which had assigned a value before.

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