Previous in Differential Equation Next in Differential Equation
Question Number 57571 by cesar.marval.larez@gmail.com last updated on 07/Apr/19
Commented by MJS last updated on 07/Apr/19
$$\mathrm{what}\:\mathrm{is}\:``\mathrm{sen}''? \\ $$$$\mathrm{if}\:\mathrm{it}'\mathrm{s}\:\mathrm{sinus}\:\mathrm{or}\:\mathrm{secans}\:\mathrm{we}\:\mathrm{cannot}\:\mathrm{solve}\:\mathrm{it}\: \\ $$