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Roots of a Quartic Equation


The calculator solves for the roots of a quartic equation.  Enter values into the fields to form equation of the type

ax4 + bx3 + cx2 + dx + e = 0

and press 'calculate'. The roots are given in the form

m + ni

where i is the square root of -1. If n is not zero then the root is complex. If n is zero then the root is real.

Press "see graphical function" to display the graph for the function you input (requires Java).

x4   +   x3   +   x2   +   x   +     =  0  
ax4   +   bx3   +   cx2   +   dx   +   e   =  0  
                   
number of significant figures:



     

Roots:

1:
2:
3:
4:
 

©2017 Dr Toby Hudson
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