matlab二阶多项式求根

在Matlab中，可以使用`roots`函数来求解二阶多项式的根。为了使用该函数，首先要将二阶多项式的系数存入一个矢量变量中。例如，假设二阶多项式为p(x)=ax^2+bx+c，那么可以将系数a、b和c存入一个长度为3的矢量p中。然后，使用`roots(p)`即可求解该二阶多项式的根。例如，如果多项式的系数p为[1 0 0 0 5 7]，则调用`roots(p)`函数后会得到多项式的根的数值表示。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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