What is the derivative of xcos(pi/5) ?

The derivative of xcos(pi/5) is (sqrt(5)+1)/4

What is the first derivative of xcos(pi/5) ?

The first derivative of xcos(pi/5) is (sqrt(5)+1)/4

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\frac{d}{d x} (x cos (\frac{π}{5}))

\frac{5 + 1}{4}

Solution steps

\frac{d}{d x} (x cos (\frac{π}{5}))

Take the constant out:

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

= cos (\frac{π}{5}) \frac{d x}{d x}

Apply the common derivative:

\frac{d x}{d x} = 1

= cos (\frac{π}{5}) \cdot 1

Simplify

cos (\frac{π}{5}) \cdot 1 : \frac{5 + 1}{4}

= \frac{5 + 1}{4}

\frac{d}{d x} (x e n (x))

x \to 0 lim (\frac{8 x}{sin ( x )})

\frac{\partial}{\partial x} (7 x - 5 x^{2} y + 8 y z^{2})

\int \frac{x ^{3}}{x ^{2} + 100} d x

f (x) = - 4 sin (x) + 9 x

What is the derivative of xcos(pi/5) ?
The derivative of xcos(pi/5) is (sqrt(5)+1)/4
What is the first derivative of xcos(pi/5) ?
The first derivative of xcos(pi/5) is (sqrt(5)+1)/4