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Category: Relation and Functions

solve-y-y-2-sin-2-t-

Question Number 90972 by abdomathmax last updated on 27/Apr/20 $${solve}\:{y}^{''} \:+{y}\:=\frac{\mathrm{2}}{{sin}^{\mathrm{2}} {t}} \\ $$ Answered by Joel578 last updated on 27/Apr/20 $$\bullet\:\mathrm{Homogeneous}\:\mathrm{solution} \\ $$$$\mathrm{with}\:\mathrm{char}.\:\mathrm{eq}.\:\lambda^{\mathrm{2}} \:+\:\mathrm{1}\:=\:\mathrm{0}\:\rightarrow\:\lambda_{\mathrm{1},\mathrm{2}}…

find-all-functions-f-2-derivable-verify-f-x-2-f-x-2-1-and-f-0-1-

Question Number 90970 by abdomathmax last updated on 27/Apr/20 $${find}\:{all}\:{functions}\:{f}\:\:\left(\mathrm{2}×{derivable}\right)\:{verify} \\ $$$$\left({f}^{'} \left({x}\right)\right)^{\mathrm{2}} \:−\left({f}\left({x}\right)\right)^{\mathrm{2}} \:=\mathrm{1}\:{and}\:{f}^{'} \left(\mathrm{0}\right)=\mathrm{1} \\ $$ Commented by mr W last updated on…