Practicing Success

Target Exam

CUET

Subject

-- Mathematics - Section B1

Chapter

Continuity and Differentiability

Question:

If $\sin (x+y)=e^{x+y}-2$, then $\frac{d y}{d x}$ is equal to

Options:

x = 0

x = 2

x = −1

x = 3

Correct Answer:

x = −1

Explanation:

$\sin (x+y)=e^{x+y}-2$

differentiating wrt x

$\cos(x + y)[1+\frac{dy}{dx}]=e^{x+y}[1+\frac{dy}{dx}]$

$⇒\frac{dy}{dx}=-1$