How to find the roots of equations in Matlab v7.12
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how can I find roots for equation x^3=a
where a is a defined variable = 0.3 (a=0.3) and '^' means 'power'
Please help
thanks MissA
回答（2 个）
Muruganandham Subramanian
2012-12-12
编辑：Muruganandham Subramanian
2012-12-12
try this:
a=0.3;
x=nthroot(a,(-1/3));
for more info,
>>help nthroot
Walter Roberson
2012-12-12
roots([1 0 0 -a])
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