A student is trying to prove that x 3 + y 3 3. The student writes: a.
Question:
A student is trying to prove that x3 + y33. The student writes:
a. Identify the error made in the proof.
b. Provide a counter-example to show that the statement is not true.
Transcribed Image Text:
(x + y)² = x3 + 3x²y + 3xy² + y² which is less than x3 + y3 since 3x²y + 3xy² > 0
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a The error made in the proof is the incorrect assumption ...View the full answer
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Related Book For
Edexcel AS And A Level Mathematics Pure Mathematics Year 1/AS
ISBN: 9781292183398
1st Edition
Authors: Greg Attwood
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