2 cos x + cotan x

2 cos x + sec² x

2 cos x + cosec² x

-2 cos x - cotan x

-2 cos x - sec² x

$$3\cos x-\sin x$$  

$$3\cos x+\sin x$$  

$$\cos x-\sin x$$  

$$\cos x+\sin x$$  

$$5\cos x-\sin x$$  

0

1

2

3

4

8 (cos²x - sin²x)

24 (cos²x - sin²x)

24 (sin²x - cos²x)

24 (cos x - sin x)

12 (cos²x - sin²x)

f'(x) = 2 sin x

f'(x) = 2 cos x

f'(x) = -2 sin x

f'(x) = -2 cos x

f'(x) = -2 cosec x

$$\frac{\cos\left(x\right)-x\sin\left(x\right)}{\sin^2x}$$  

$$\frac{\sin\left(x\right)-x\cos\left(x\right)}{\sin^2x}$$  

$$\frac{1}{3}\sqrt{3}$$  

$$\frac{1}{2}\sqrt{3}$$  

$$\sqrt{3}$$