The question goes like this: Given the expression

fernandoval3sbr

fernandoval3sbr

Answered question

2022-04-08

The question goes like this:
Given the expression cos(ax2+bx+c)=1 has two distinct real roots x=1 and x=1, a, b, c(2,5), find the maximum value of acb2.

Answer & Explanation

Marin Lowe

Marin Lowe

Beginner2022-04-09Added 18 answers

You have a mistake in your last sentence: since the period of cosx is 2π,a+b+c=3π and ab+c=π.
Summing the two equations gives 2a+2c=4π or a+c=2π, which means that b=π.

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