Question Number 145436 by mathdanisur last updated on 04/Jul/21
Commented by justtry last updated on 05/Jul/21
Commented by mathdanisur last updated on 05/Jul/21
![thanks Ser, but wrong (1+a)^k <=1+ka if k∈[0;1]](https://www.tinkutara.com/question/Q145512.png)
$${thanks}\:{Ser},\:{but}\:{wrong} \\ $$$$\left(\mathrm{1}+{a}\right)^{{k}} <=\mathrm{1}+{ka}\:\:{if}\:\:{k}\in\left[\mathrm{0};\mathrm{1}\right] \\ $$