Description
Return a three-stage scalar chain-rule derivative.
Differential-calculus formulas relate supplied local values and derivatives under explicit coordinate and unit conventions. A tangent term, curvature expression or directional derivative assumes the required differentiability and regularity; substituting numerical derivatives does not verify those hypotheses for an actual function.
Return a three-stage scalar chain-rule derivative.
When to use this tool
Use Chain Rule Three Stage Local Product when evaluating the stated local differential-calculus identity from supplied values.
How to use the tool and how it works
- Enter outerDerivative, middleDerivative, innerDerivative. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read derivative. Use the output convention below.
Return a three-stage scalar chain-rule derivative. derivative = outerDerivative*middleDerivative*innerDerivative.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| outerDerivative | Outer Derivative | Required. Finite number. |
| middleDerivative | Middle Derivative | Required. Finite number. |
| innerDerivative | Inner Derivative | Required. Finite number. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| derivative | Derivative | Required. Finite number. |
{
"input": {
"outerDerivative": 2,
"middleDerivative": -3,
"innerDerivative": 4
},
"output": {
"derivative": -24
}
}Limitations and assumptions
- Each derivative must refer to the corresponding composed input at the same compatible evaluation point; no functions are differentiated.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Differentiate or validate the complete function and its domain first; use suitable symbolic or numerical methods and check regularity and coordinate conventions for the intended interpretation.
References
Similar or alternative tools
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