Solving a cubic equation using MATLAB

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Menik
Menik 2013-5-14
How to solve a cubic equation using Matlab Eg, if I have an equation with ax^3 + bx^2 + cx + d =0
if there are another variables how can I get equations for x ?
Please help. Thanks, M

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回答（1 个）

Roger Stafford
Roger Stafford 2013-5-14
It looks as though you are interested in a symbolic rather than numeric solution. If 'solve' doesn't work, you may find the following article useful:
http://en.wikipedia.org/wiki/Cubic_function

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