Previous in Relation and Functions Next in Relation and Functions
Question Number 56331 by maxmathsup by imad last updated on 14/Mar/19
$${calculate}\:{lim}_{{x}\rightarrow\mathrm{0}} \:\:\:\:\:\frac{{ch}\left({cosx}\right)−{cos}\left({chx}\right)}{{x}^{\mathrm{2}} } \\ $$