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Posted: **Thu Jun 30, 2022 7:41 pm**

: One Solution Of The Differential Equation Y 9y 0 Is Y Cos 3x Using The Method Of Reduction Of Order Let Y Uy Do N 1 (11.19 KiB) Viewed 44 times

One solution of the differential equation y" +9y=0 is y₁= cos 3x. Using the method of reduction of order (let y uy; do not use the shortcut integral formula for the shown work - that earns no credit), a second linearly independent solution is