determine an equation of degree 3 with roots x=3 +- i and x=-4 Is this equation unique? thanks for help!i have no idea oh how to formulate an equation with those roots
Last edited by monkius; Oct 24th 2008 at 02:06 PM.
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Originally Posted by monkius determine an equation of degree 3 with roots x=3 +- i and x=-4 Is this equation unique? thanks for help! a cubic equation with roots $\displaystyle r_1,~r_2,~r_3$ can be written as $\displaystyle a(x - r_1)(x - r_2)(x - r_3)$ this is not unique. because you can have different values for $\displaystyle a$
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