CALCULATOR
Cubic Polynomial Value at x Calculator
Cubic Polynomial Value at x Calculator — change the supplied values to calculate cubic polynomial value at x.
One real cubic evaluation; bounded x=-10..10. Product visualization must plot this same polynomial, with textual point fallback. No roots or extrema claim.
Accepted inputs: A: -100 to 100 number; B: -100 to 100 number; C: -100 to 100 number; D: -100 to 100 number; X: -10 to 10 number.
How the calculation works
P(x)=ax³+bx²+cx+d
Horner form ((ax+b)x+c)x+d evaluates the same cubic with fewer intermediate products.
Worked example
With a 2 number, b -3 number, c 4 number, d 5 number, x 2 number, cubic polynomial value at x is 17 number.
Assumptions and limits
One real cubic evaluation; bounded x=-10..10. Product visualization must plot this same polynomial, with textual point fallback. No roots or extrema claim.