How to avoid the scientific notation in output?

Question

I was trying with DecimalForm, but I read that the suitable one is NumberForm[0.5^20, 12] from version 11.

But when I evaluate

NumberForm[0.5^20, 12]

Mathematica 11 shows the result in scientific notation. How can I obtain the output in pure decimal notation?

You can use an option like NumberForm[0.5^20, {12, 11}, ScientificNotationThreshold -> {-100, 100}]. — b.gates.you.know.what, Commented Dec 2, 2017 at 10:37
@b.gatessucks Math 11 says NumberForm::optx: Unknown option ScientificNotationThreshold in NumberForm[9.53674 10^(-7),{12,11},ScientificNotationThreshold->{-100,100}]. Mathematica it´s so complicate for simple things!! and so beautifull in other ones. — Mika Ike, Commented Dec 2, 2017 at 10:38

Anxon Pués · Accepted Answer · 2017-12-02 10:53:12Z

7

You can use AccountingForm consult help for it. I tried and look the result

AccountingForm[0.2^20, 40]

0.0000000000000104857600000000

answered Dec 2, 2017 at 10:53

Anxon Pués

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$\begingroup$ @MikaIke You might not be happy with AccountingForm when using negative numbers! $\endgroup$
– Carl Woll
Commented Dec 2, 2017 at 17:11

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Carl Woll · Accepted Answer · 2017-12-02 18:01:08Z

13

Before M11.2 you can use ExponentFunction:

NumberForm[0.5^20, 12, ExponentFunction->(Null&)]

0.000000953674316406

In M11.2 you can also use the option ScientificNotationThreshold as suggested by @b.gatessucks:

NumberForm[0.5^20, 12, ScientificNotationThreshold->{-Infinity, Infinity}]

0.000000953674316406

Instead of NumberForm, you could use DecimalForm:

DecimalForm[.5^20]

0.000000953674316406

answered Dec 2, 2017 at 15:44

Carl Woll

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2 Answers 2