Info

Cette question est clôturée. Rouvrir pour modifier ou répondre.

Matlab R2014a version gives, -3.1175^0.5 = -1.7656 but (-3.1175)^0.5 = 0.0000 + 1.7656i Why?

1 vue (au cours des 30 derniers jours)
milan
milan le 29 Mar 2016
Clôturé : MATLAB Answer Bot le 20 Août 2021
Matlab R2014a version gives, -3.1175^0.5 = -1.7656 but (-3.1175)^0.5 = 0.0000 + 1.7656i
Why?

Connectez-vous pour répondre à cette question.

Réponses (2)

Orion
Orion le 29 Mar 2016
Because of the parenthesis.
The power operation is executed before the minus operation, so
-3.1175^0.5
is strictly equivalent to :
-(3.1175^0.5)
which is not the same as
(-3.1175)^0.5
Steven Lord
Steven Lord le 29 Mar 2016
The power operator ^ has higher precedence than the unary minus operator - but parentheses () have higher precedence than either ^ or -.

Tags

Community Treasure Hunt

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

Start Hunting!

Translated by