What is the derivative of sqrt(cos(8x)) ?

The derivative of sqrt(cos(8x)) is 1/(2sqrt(cos(8x)))(-sin(8x)*8)

What is the first derivative of sqrt(cos(8x)) ?

The first derivative of sqrt(cos(8x)) is 1/(2sqrt(cos(8x)))(-sin(8x)*8)

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derivative of

cos (8 x)

\frac{1}{2 cos ( 8 x )} (- sin (8 x) \cdot 8)

Solution steps

\frac{d}{d x} (cos (8 x))

Apply the chain rule:

\frac{1}{2 cos ( 8 x )} \frac{d}{d x} (cos (8 x))

= \frac{1}{2 cos ( 8 x )} \frac{d}{d x} (cos (8 x))

\frac{d}{d x} (cos (8 x)) = - sin (8 x) \cdot 8

= \frac{1}{2 cos ( 8 x )} (- sin (8 x) \cdot 8)

y^{^{''}} + \frac{1}{4} y^{^{'}} + 2 y = 2 cos (2 t)

x \to a lim (e^{f (x)})

f (x) = 0.8 x^{2} + 4, g (x) = x, [- 6, 6]

\int \frac{u}{x} d x

y = sec^{2} (3 x)

What is the derivative of sqrt(cos(8x)) ?
The derivative of sqrt(cos(8x)) is 1/(2sqrt(cos(8x)))(-sin(8x)*8)
What is the first derivative of sqrt(cos(8x)) ?
The first derivative of sqrt(cos(8x)) is 1/(2sqrt(cos(8x)))(-sin(8x)*8)