QUESTION 10 Find the resulting ODES obtained using separation of variables on: u +u +(1+r)²u =0 assuming u=R (r)0(0) 00 rr O a. R"+R'=2R, 0"=10 O b. R'+R'=1, e"=10 O c. none of the above O d. R"+R'=2(1+r)?R, 0"=- 10 O e. R"+R'=2(1+r)²R, 0"=ìO QUESTION 11

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