rand_althor
Active Member
- Joined
- May 16, 2015
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- HSC
- 2015
Hey, could someone please help with 2?
=1+\cos(2x)\textup{ for }0\leq x \leq 2\pi \\2&. \textup{ Show that if }0<x<\frac{\pi}{4}\textup{, then }\cos(2x)>2\sin^2(x)-1\end{align*})
From the first question, I can see that there are no points of intersection for the two curves between
, but how do I prove the inequality?
From the first question, I can see that there are no points of intersection for the two curves between