What is the derivative of {r}(t,xcos(t)) ?

The derivative of {r}(t,xcos(t)) is cos(t) derivative of {r}(t,x)

What is the first derivative of {r}(t,xcos(t)) ?

The first derivative of {r}(t,xcos(t)) is cos(t) derivative of {r}(t,x)

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\frac{d}{d x} (r (t, x) cos (t))

cos (t) \frac{d}{d x} (r (t, x))

Solution steps

\frac{d}{d x} (r (t, x) cos (t))

Treat

t

as a constant

Take the constant out:

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

= cos (t) \frac{d}{d x} (r (t, x))

x \to 0 lim (\frac{1 - cos ( 4 x )}{x tan ( 3 x )})

\frac{\partial}{\partial x} (- 2 e^{- 7 x y})

\int - \frac{1}{cos ( x )} d x

\frac{d}{d x} (\frac{3}{6 - x})

\frac{d}{d x} (3 x^{4} + 15)

What is the derivative of {r}(t,xcos(t)) ?
The derivative of {r}(t,xcos(t)) is cos(t) derivative of {r}(t,x)
What is the first derivative of {r}(t,xcos(t)) ?
The first derivative of {r}(t,xcos(t)) is cos(t) derivative of {r}(t,x)