Raising a negative value to a fraction power?

I am rasing a negative value to a fraction power. Depending on how I write the operation (putting the negative value in parenthesis or not), the answer changes (see below)? Am I missing something?

 Akzeptierte Antwort

Alan Stevens
Alan Stevens am 24 Nov. 2020

1 Stimme

Exponentiation has a higher priority than negation, so -2^1.2 is -(2^1.2), this results in a negative real. On the other had (-2)^1.2 raises a negative number to a fractional power, because parentheses take priority over exponentiation, and the result is a complex number.

1 Kommentar

Ahmed
Ahmed am 24 Nov. 2020
Thanks alot. Yes, I was missing this MATLAB operator precedence rules when parenthesis are involved.

Melden Sie sich an, um zu kommentieren.

Weitere Antworten (0)

Kategorien

Mehr zu Symbolic Math Toolbox finden Sie in Hilfe-Center und File Exchange

Gefragt:

am 24 Nov. 2020

Kommentiert:

am 24 Nov. 2020

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by