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let-give-J-x-1-pi-0-pi-cos-xcost-dt-1-find-J-and-J-in-form-of-integrals-2-prove-that-J-x-x-pi-0-pi-sin-2-t-cos-xcost-dt-and-J-is-solution-of-d-e-xy-y-xy-0-




Question Number 30215 by abdo imad last updated on 18/Feb/18
let give J(x)= (1/π) ∫_0 ^π cos(xcost)dt  1) find J^′  and J^(′′)  in form of integrals  2)prove that J^′ (x)=((−x)/π) ∫_0 ^π  sin^2 t cos(xcost)dt and J is  solution of d.e.  xy^(′′)  +y^′  +xy=0
letgiveJ(x)=1π0πcos(xcost)dt1)findJandJinformofintegrals2)provethatJ(x)=xπ0πsin2tcos(xcost)dtandJissolutionofd.e.xy+y+xy=0

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