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Question 32716: Inverse Coefficients of a Nonzero-Slope Affine Function

On this page
  1. Original question and givens
  2. Definition and scope
  3. Step-by-step derivation
  4. Reverse checks
  5. Result
  6. This question review and source binding

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R0064-32716 · q-20261004-advance-20261005-r04-inverse-function-0091

Original question and givens

Over R, let f:R→R be f(x)=(-16)x+(3), with m≠0. Write the inverse as g(y)=uy+v and give (u,v) as reduced positive-denominator fractions, retaining /1 for integers.

  • G001 — Over R, let f:R→R be f(x)=(-16)x+(3), with m≠0. Write the inverse as g(y)=uy+v and give (u,v) as reduced positive-denominator fractions, 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.

Step-by-step derivation

S001 · implies

Before

source roles = [qf-inverse-affine-coefficients, affine_inverse_coefficients, reals, []]

After

derived = [[SLOPE_FIRST_pair_fractions_RETAIN1]]

Conditions: none

Legacy banks enforce their exact source keys/operation/domain.BASE integers retain metadata without treating it as an oracle.Distinguish NUMBER,string,fraction pair and vector equality formats;retain original bilingual data/AST/status.

Step identifiers and dependencies

Rule: R64_SOURCE_exact_legacy_interface_BASE_metadata_AND_output_roles · Uses: G001

S002 · calculation

Before

Affine inverse ORIGINAL reciprocal nonzero slope := div(1, -16)

After

Affine inverse ORIGINAL reciprocal nonzero slope = -1/16

Conditions: none

Use ORIGINAL operands/order for exact integer/rational arithmetic.RAW bounds are bank-specific;derived values are not SAFE-recapped or approximated.Do not import legacy caps into BASE integers.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S001

S003 · calculation

Before

Affine inverse ORIGINAL negative constant := sub(0, 3)

After

Affine inverse ORIGINAL negative constant = -3

Conditions: none

Use ORIGINAL operands/order for exact integer/rational arithmetic.RAW bounds are bank-specific;derived values are not SAFE-recapped or approximated.Do not import legacy caps into BASE integers.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S002

S004 · calculation

Before

Affine inverse ORIGINAL negative b over m := div(-3, -16)

After

Affine inverse ORIGINAL negative b over m = 3/16

Conditions: none

Use ORIGINAL operands/order for exact integer/rational arithmetic.RAW bounds are bank-specific;derived values are not SAFE-recapped or approximated.Do not import legacy caps into BASE integers.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S003

S005 · calculation

Before

Affine inverse reverse g after f slope := mul(-1/16, -16)

After

Affine inverse reverse g after f slope = 1

Conditions: none

Use ORIGINAL operands/order for exact integer/rational arithmetic.RAW bounds are bank-specific;derived values are not SAFE-recapped or approximated.Do not import legacy caps into BASE integers.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S004

S006 · calculation

Before

Affine inverse reverse u times original b := mul(-1/16, 3)

After

Affine inverse reverse u times original b = -3/16

Conditions: none

Use ORIGINAL operands/order for exact integer/rational arithmetic.RAW bounds are bank-specific;derived values are not SAFE-recapped or approximated.Do not import legacy caps into BASE integers.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S005

S007 · calculation

Before

Affine inverse reverse g after f constant := sum(-3/16, 3/16)

After

Affine inverse reverse g after f constant = 0

Conditions: none

Use ORIGINAL operands/order for exact integer/rational arithmetic.RAW bounds are bank-specific;derived values are not SAFE-recapped or approximated.Do not import legacy caps into BASE integers.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S006

S008 · calculation

Before

Affine inverse reverse f after g slope := mul(-16, -1/16)

After

Affine inverse reverse f after g slope = 1

Conditions: none

Use ORIGINAL operands/order for exact integer/rational arithmetic.RAW bounds are bank-specific;derived values are not SAFE-recapped or approximated.Do not import legacy caps into BASE integers.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S007

S009 · calculation

Before

Affine inverse reverse m times inverse constant := mul(-16, 3/16)

After

Affine inverse reverse m times inverse constant = -3

Conditions: none

Use ORIGINAL operands/order for exact integer/rational arithmetic.RAW bounds are bank-specific;derived values are not SAFE-recapped or approximated.Do not import legacy caps into BASE integers.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S008

S010 · calculation

Before

Affine inverse reverse f after g constant := sum(-3, 3)

After

Affine inverse reverse f after g constant = 0

Conditions: none

Use ORIGINAL operands/order for exact integer/rational arithmetic.RAW bounds are bank-specific;derived values are not SAFE-recapped or approximated.Do not import legacy caps into BASE integers.

Step identifiers and dependencies

Rule: exact_rational_arithmetic · Uses: G001, S009

S011 · implies

Before

source roles = [-16, 3]

After

derived = [-1/16, 3/16, 1, 0, 1, 0]

Conditions: none

ONLY m≠0 permits x=(y−b)/m.The pair for g(y)=uy+v is[SLOPE,constant].BOTH whole compositions restore slope1/constant0 on ALL R.Negative m is legal;fractions retain/1.

Step identifiers and dependencies

Rule: Inverse_AFFINE_real_whole_law_SLOPE_FIRST_BOTH_compositions · Uses: G001, S010

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 Affine inverse reverse f after g constant with exact rational arithmetic, not rounded decimals.
  • S009 · premise_and_result_audit — Recompute Affine inverse reverse m times inverse constant with exact rational arithmetic, not rounded decimals.
  • S008 · premise_and_result_audit — Recompute Affine inverse reverse f after g slope with exact rational arithmetic, not rounded decimals.
  • S007 · premise_and_result_audit — Recompute Affine inverse reverse g after f constant with exact rational arithmetic, not rounded decimals.
  • S006 · premise_and_result_audit — Recompute Affine inverse reverse u times original b with exact rational arithmetic, not rounded decimals.
  • S005 · premise_and_result_audit — Recompute Affine inverse reverse g after f slope with exact rational arithmetic, not rounded decimals.
  • S004 · premise_and_result_audit — Recompute Affine inverse ORIGINAL negative b over m with exact rational arithmetic, not rounded decimals.
  • S003 · premise_and_result_audit — Recompute Affine inverse ORIGINAL negative constant with exact rational arithmetic, not rounded decimals.
  • S002 · premise_and_result_audit — Recompute Affine inverse ORIGINAL reciprocal nonzero slope 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

(-1/16, 3/16)

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.

Source hashes and review receipts
  • input commit: 0f7be61e2c22317a4075561dc822c87d881a50db
  • original question SHA-256: b40dd0477e7f2ece4a9b70b5cd59d931352024b597d338ad8db7c663e930ee4a
  • candidate record SHA-256: b273c2c64cb1b241758f02522a98df5829f0b500566e68e232183240a393eb09
  • semantic review receipt SHA-256: 8b9ea3ddfab468e9e3f0a0fc0f7682987d5e030be0d7c8860fd85df19cbe183b
  • question-first witness SHA-256: 066bfeab8fc279706861faade71b9a18a61a25235fc48700092f0488d2a6da6a
  • Lean: NOT_RUN · human review: NOT_PERFORMED
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