For which of the following functions, \(

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Target Exam

CUET

Subject

-- Mathematics - Section A

Chapter

Continuity and Differentiability

Question:

For which of the following functions, $\frac{d^2 y}{dx^2}$ = -y is not true?

Options:

y = $cosx + sinx$

y = sin x

y = cos x

$y = e^x$

Correct Answer:

$y = e^x$

Explanation:

All the given functions satisfy the condition $\frac{d^2 y}{dx^2}$ = y

except

$y = e^x$