Question

What is \[\frac{d}{dx}(\cos x)\]?

पर्याय

• \[\sec^2x\]

• \[-\sin x\]

• \[\cos x\]

• \[\sin x\]

Answer 1

The standard derivative of \[\cos x\] is negative sine. Thus, \[\frac{d}{dx}(\cos x)=-\sin x\].