a Express 2x 2 4x 8 in the form a(x b) 2 c b Find the least value of k for which the function is one one f(x) 2x 2 4x 8 for x , x k ...

Step1 a To express 2x2 4x 8 in the form ax b2 c we need to complete the square 2x2 4x 8 2x2 2x 4 2x ...

a. Express 2x 2 + 4x 8 in the form a(x + b) 2 + c.

Question:

a. Express 2x² + 4x − 8 in the form a(x + b)² + c.

b. Find the least value of k for which the function is one-one.

f(x) = 2x² + 4x − 8 for x ∈ ℝ, x ≥ k

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Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

ISBN: 9781108407144

1st Edition

Authors: Sue Pemberton, Julian Gilbey

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Question Posted: Mar 09, 2023 05:43 AM

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a. Express 2x 2 + 4x 8 in the form a(x + b) 2 + c.

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Step1 a To express 2x2 4x 8 in the form ax b2 c we need to complete the square 2x2 4x 8 2x2 2x 4 2x ...View the full answer

Cambridge International AS And A Level Mathematics Pure Mathematics 1 Coursebook

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