Question 32652: Signed Moment Integral of a Monomial

Original question and givens

On all R, f(x)=(-2)x^1, 0≤n≤5. Use the exact signed moment c(b^(n+1)−a^(n+1))/(n+1) on oriented endpoints a=-2, b=0. Give a reduced fraction with positive denominator, retaining /1 for integers.

• G001 — On all R, f(x)=(-2)x^1, 0≤n≤5. Use the exact signed moment c(b^(n+1)−a^(n+1))/(n+1) on oriented endpoints a=-2, b=0. Give a reduced fraction with positive denominator, retaining /1 for integers.

Definition and scope

Use the original question domain, assumptions and cited MKO definitions. This item has second-context mathematical and bilingual review, with the model, answer and every arithmetic step independently recomputed from the original parameters; the source question remains a candidate.

• mko-definite-integral

Step-by-step derivation

source roles = [qf-integral-monomial, monomial_integral, reals, []]

derived = [[signed_moment_fraction_RETAIN1]]

Monomial ORIGINAL term lower endpoint ORIGINAL power multiplication1 := mul(1, -2)

Monomial ORIGINAL term lower endpoint ORIGINAL power multiplication1 = -2

Monomial ORIGINAL term lower endpoint ORIGINAL power multiplication2 := mul(-2, -2)

Monomial ORIGINAL term lower endpoint ORIGINAL power multiplication2 = 4

source roles = [Monomial ORIGINAL term lower endpoint, -2, 2]

derived = [4]

Monomial ORIGINAL term upper endpoint ORIGINAL power multiplication1 := mul(1, 0)

Monomial ORIGINAL term upper endpoint ORIGINAL power multiplication1 = 0

Monomial ORIGINAL term upper endpoint ORIGINAL power multiplication2 := mul(0, 0)

Monomial ORIGINAL term upper endpoint ORIGINAL power multiplication2 = 0

source roles = [Monomial ORIGINAL term upper endpoint, 0, 2]

derived = [0]

Monomial ORIGINAL term ORIGINAL upper power minus lower power := sub(0, 4)

Monomial ORIGINAL term ORIGINAL upper power minus lower power = -4

Monomial ORIGINAL term ORIGINAL coefficient times power difference := mul(-2, -4)

Monomial ORIGINAL term ORIGINAL coefficient times power difference = 8

Monomial ORIGINAL term ORIGINAL signed moment over positive exponent := div(8, 2)

Monomial ORIGINAL term ORIGINAL signed moment over positive exponent = 4

source roles = [Monomial ORIGINAL term, -2, 1, -2, 0]

derived = [4, 0, -4, 4/1]

Reverse checks

• S011 · premise_and_result_audit — Reverse-check ORIGINAL data,field roles,types,domain and premises;the conclusion need not uniquely recover its premises.Keep source-bound candidates,independent review,formal proof and publication separate.
• S010 · premise_and_result_audit — Recompute Monomial ORIGINAL term ORIGINAL signed moment over positive exponent with exact rational arithmetic, not rounded decimals.
• S009 · premise_and_result_audit — Recompute Monomial ORIGINAL term ORIGINAL coefficient times power difference with exact rational arithmetic, not rounded decimals.
• S008 · premise_and_result_audit — Recompute Monomial ORIGINAL term ORIGINAL upper power minus lower power with exact rational arithmetic, not rounded decimals.
• S007 · premise_and_result_audit — Reverse-check ORIGINAL data,field roles,types,domain and premises;the conclusion need not uniquely recover its premises.Keep source-bound candidates,independent review,formal proof and publication separate.
• S006 · premise_and_result_audit — Recompute Monomial ORIGINAL term upper endpoint ORIGINAL power multiplication2 with exact rational arithmetic, not rounded decimals.
• S005 · premise_and_result_audit — Recompute Monomial ORIGINAL term upper endpoint ORIGINAL power multiplication1 with exact rational arithmetic, not rounded decimals.
• S004 · premise_and_result_audit — Reverse-check ORIGINAL data,field roles,types,domain and premises;the conclusion need not uniquely recover its premises.Keep source-bound candidates,independent review,formal proof and publication separate.
• S003 · premise_and_result_audit — Recompute Monomial ORIGINAL term lower endpoint ORIGINAL power multiplication2 with exact rational arithmetic, not rounded decimals.
• S002 · premise_and_result_audit — Recompute Monomial ORIGINAL term lower endpoint ORIGINAL power multiplication1 with exact rational arithmetic, not rounded decimals.
• S001 · premise_and_result_audit — Reverse-check ORIGINAL data,field roles,types,domain and premises;the conclusion need not uniquely recover its premises.Keep source-bound candidates,independent review,formal proof and publication separate.

Result

4/1

The full substitutions and premise checks give the original answer; source identity,format and status are unchanged.

This question review and source binding

Review date: 2026-10-26

Original questions, answers, step expressions, numeric ASTs and historical records are retained. Source candidate labels remain historical and are not overwritten as formal proof.