If y = cos nx, then (d^2y)/dx^2 + n^2y = ______ - Vidyadip

MCQ

If y = cos nx, then $(d^2y)/dx^2 + n^2y$ = ______

✓
0
B
$-m^2$
C
1
D
-1

✓

Answer

Correct option: A.

0

A

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