CUET Preparation Today
CUET
-- Mathematics - Section A
Continuity and Differentiability
For which of the following functions, \(\frac{d^2 y}{dx^2}\) = -y is not true?
y = \( cosx + sinx \)
y = sin x
y = cos x
$y = e^x$
All the given functions satisfy the condition \(\frac{d^2 y}{dx^2}\) = y