What is (\partial)/(\partial r)(rcos(s)) ?

The answer to (\partial)/(\partial r)(rcos(s)) is cos(s)

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(\partial)/(\partial r)(rcos(s))

\frac{\partial}{\partial r} (r cos (s))

cos (s)

Solution steps

\frac{\partial}{\partial r} (r cos (s))

Treat

s

as a constant

Take the constant out:

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

= cos (s) \frac{\partial}{\partial r} (r)

Apply the common derivative:

\frac{\partial}{\partial r} (r) = 1

= cos (s) \cdot 1

Simplify

= cos (s)

What is (\partial)/(\partial r)(rcos(s)) ?
The answer to (\partial)/(\partial r)(rcos(s)) is cos(s)