summary.polynomial | R Documentation |
Summarize a polynomial by describing its “key” points.
## S3 method for class 'polynomial' summary(object, ...)
object |
an object of class |
... |
Not used by this method. |
This is a method for the generic function summary
.
A list of class "summary.polynomial"
(which has its own
print
method) containing information on zeros, stationary and
inflexion points.
p <- polynomial(6:1) p ## 6 + 5*x + 4*x^2 + 3*x^3 + 2*x^4 + x^5 pz <- summary(p) pz ## [1] -1.49180+0.0000i -0.80579-1.2229i -0.80579+1.2229i ## [4] 0.55169-1.2533i 0.55169+1.2533i ## To retrieve the original polynomial from the zeros: poly.calc(pz) ## Warning: imaginary parts discarded in coercion ## 6 + 5*x + 4*x^2 + 3*x^3 + 2*x^4 + x^5
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