function r=AA(L)
pi=3.1415926;
r=solve('4*pi*(r^3)/3+pi*r^2*L-0.3095')
end
但是输出的结果是:
r =
root(1.0*z^3 + 0.75*L*z^2 - 0.07388768233041240963070428714569, z, 1)
root(1.0*z^3 + 0.75*L*z^2 - 0.07388768233041240963070428714569, z, 2)
root(1.0*z^3 + 0.75*L*z^2 - 0.07388768233041240963070428714569, z, 3)
这个我该怎么处理??