Description
Extract nonzero ascending polynomial power/coefficient records; explicit zero powers are intentionally omitted and exact equality is used.
A coefficient list here is constant-first: index j multiplies x to power j. Thus [1, 2, 3] represents 1 + 2x + 3x². Trailing list zeros are high-power zeros; stored length can differ from mathematical degree, and the zero polynomial needs a separate degree convention.
Extract nonzero ascending polynomial power/coefficient records; explicit zero powers are intentionally omitted and exact equality is used.
When to use this tool
Use this tool to extract nonzero ascending polynomial power/coefficient records; explicit zero powers are intentionally omitted and exact equality is used.
How to use the tool and how it works
- Enter coefficients using the field definitions below.
- Run the operation. Correct input errors before interpreting an output.
- Read result.terms. Use the ordering, boundary rules and absence conditions described below.
Return one {power, coefficient} record for every exactly nonzero coefficient, in increasing power order.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| coefficients | Nonempty coefficients in ascending power order [constant, x, x², ...]. | Dense list of at most 128 finite numbers; integer/shape constraints above also apply. |
| Output field | Interpretation |
|---|---|
| result | Object containing the named fields below. |
| result.terms | Nonzero {power, coefficient} records in increasing power order. |
{
"input": {
"coefficients": [
1,
0,
3
]
},
"output": {
"result": {
"terms": [
{
"power": 0,
"coefficient": 1
},
{
"power": 2,
"coefficient": 3
}
]
}
}
}Limitations and assumptions
- Coefficient indexes are powers starting at zero; no near-zero tolerance is used.
- Coefficient lists use ascending powers and ordinary floating-point arithmetic. Nonempty input is required; individual operations impose tighter size limits. The tool does not attach or check physical units for x and its coefficients.
- Every declared top-level input field is required and unexpected fields are rejected. Ordinary strings are limited to 8,192 UTF-16 code units and lists to 128 entries, with tighter operation-specific bounds where stated. JSON text has bounded nesting and node counts.
- Numeric outputs must be finite and no larger in absolute magnitude than the safe-integer limit; operations returning exact large integers use decimal text. Positions are zero-based and spans end exclusively unless the operation explicitly states a different convention.
Alternative or Complementary methods
Check coefficient order before importing data from another algebra library. Use separate root-finding or symbolic algebra methods when an operation requires more than the stated coefficient transformation.
References
Similar or alternative tools
- Polynomial Dense from Power Pairs
Build bounded dense ascending coefficients by summing explicit sparse power occurrences into a supplied maximum degree; duplicates are summed, missing powers are zeros.
- Polynomial Low Power Remainder
Split ascending polynomial coefficients into remainder modulo x^k and quotient by x^k; not general polynomial long division.