Question: Differential Equations Pls help me with this. Needed ASAP with solution Verify y = 4 cos 2x + 6 sin 2x is a solution to

Differential Equations

Pls help me with this. Needed ASAP with solution

Differential Equations Pls help me with this.
Verify y = 4 cos 2x + 6 sin 2x is a solution to y" + 4y = 0 on the interval (-infinity, infinity)

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