Hello please show it... a ∈ [0 , (π/4)] a ≤tan a ≤ 2a


Question and Answers Forum

All Questions Topic List
None Questions
Previous in All Question Next in All Question
Previous in None Next in None
Question Number 162326 by stelor last updated on 28/Dec/21

$H e l l o p l e a s e s h o w i t . . .$ $a \in [0, \frac{π}{4}] a ⩽ t a n a ⩽ 2 a$
	Answered by mindispower last updated on 28/Dec/21

	$1 ⩽ 1 + {t g}^{2} (a) ⩽ 2, \forall a \in [0, \frac{π}{4}]$ $\int_{0}^{x} 1 d a ⩽ \int_{0}^{x} (1 + {t g}^{2} (a)) d a ⩽ 2 \int_{0}^{x} d a$ $\Leftrightarrow x ⩽ t g (x) ⩽ 2 x$
	Commented by stelor last updated on 28/Dec/21

	$t h a n k s . .$
	Commented by mindispower last updated on 28/Dec/21

	$p l e a s u r s i r$
Terms of Service
Privacy Policy
Contact: info@tinkutara.com

Question and Answers Forum