Get Study Tools
Trigonometric equations and identities
Answer & Explanation
2021-12-29Added 35 answers
2021-12-30Added 36 answers
2022-01-09Added 457 answers
f(x)=1−cosxx2 is an even function, so we only look at x∈[0,1]. It's easy to prove f(x) is continuous and differentiable at x=0, and
Hence f(x)≥f(1)=1−cos1≈.46>13, 1−cosx≥(1−cos1)x2>13x2
Do you have a similar question?
Recalculate according to your conditions!
Ask your question. Get your answer.
Let our experts help you. Answer in as fast as 15 minutes.
Most Popular Questions
Didn't find what you were looking for?
Connect with us
Get Plainmath App
Louki Akrita, 23, Bellapais Court, Flat/Office 46, 1100, Nicosia, Cyprus
Cyprus reg.number: ΗΕ 419361
E-mail us: email@example.com
Our Service is useful for:
Plainmath is a platform aimed to help users to understand how to solve math problems by providing accumulated knowledge on different topics and accessible examples. Plainmath.net is owned and operated by RADIOPLUS EXPERTS LTD.
2022 Plainmath. All rights reserved
Get answers within minutes and finish your homework faster
Dont have an account?
Create a free account to see answers
Already have an account?