y = 3 cos 2x is a solution of the differential equation - Vidyadip

MCQ

y = 3 cos 2x is a solution of the differential equation

A
`"dy"/"dx" - "6y" = 0`
B
`("d"^2"y")/"dx"^2 - 4"y" = 0`
✓
`("d"^2"y")/"dx"^2 + 4"y" = 0`
D
`"dy"/"dx" + "6y" = 0`

✓

Answer

Correct option: C.

`("d"^2"y")/"dx"^2 + 4"y" = 0`

C

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