What is the derivative of cos(7x*7) ?

The derivative of cos(7x*7) is -49sin(7x)

What is the first derivative of cos(7x*7) ?

The first derivative of cos(7x*7) is -49sin(7x)

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\frac{d}{d x} (cos (7 x) \cdot 7)

- 49 sin (7 x)

Solution steps

\frac{d}{d x} (cos (7 x) \cdot 7)

Take the constant out:

(a \cdot f)^{'} = a \cdot f^{'}

= 7 \frac{d}{d x} (cos (7 x))

Apply the chain rule:

- sin (7 x) \frac{d}{d x} (7 x)

= - sin (7 x) \frac{d}{d x} (7 x)

\frac{d}{d x} (7 x) = 7

= 7 (- sin (7 x) \cdot 7)

Simplify

= - 49 sin (7 x)

\int (10 sin (5 x)) d x

\frac{d}{d x} (6 \cdot 3^{x})

y = 2 - \frac{x}{2}, x = 2 y^{2}

\int (9 x + 2)^{2} d x

\int \frac{a + b x ^{5}}{6 a x + b x ^{6}} d x

What is the derivative of cos(7x*7) ?
The derivative of cos(7x*7) is -49sin(7x)
What is the first derivative of cos(7x*7) ?
The first derivative of cos(7x*7) is -49sin(7x)