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| Math Central | Quandaries & Queries |
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Question from Josh, a student: What is the correlation between imaginary roots (of a quadratic or other polynomial equation) and the graph of the equation? As in, how can one represent imaginary solutions graphically (and why does that work)? Thanks |
Hi Josh,
Try plotting the three functions
f(x) = x2 - 4
g(x) = x2
h(x) = x2 + 4
What are the roots of these polynomials? Answer this question both algebraically and by looking at the graphs.
Harley
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