Question Number 97922 by bemath last updated on 10/Jun/20
$$\mathrm{y}''\:+\:\mathrm{y}\:=\:\mathrm{cot}\:{x}\: \\ $$
Answered by bobhans last updated on 10/Jun/20
Commented by bemath last updated on 10/Jun/20
$$\mathrm{thank}\:\mathrm{you} \\ $$