perplexus.info :: Just Math : Function at least 2

Function at least 2 (Posted on 2021-10-15)

Let a,b be reals and f(x)=ax+b+9/x. Prove that there exists x₀∈[1,9], such that |f(x₀)|≥2.

No Solution Yet Submitted by Danish Ahmed Khan

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Subject	Author	Date
Longer solution	Brian Smith	2021-10-16 22:55:08
Calculus solution with graphs	Jer	2021-10-16 16:50:48
re: what am I missing?	Steve Herman	2021-10-16 08:20:47
what am I missing?	Steven Lord	2021-10-16 00:28:51

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