If \[y=b\cos \log {{\left( \frac{x}{n} \right)}^{n}}\], then \[\frac{dy}{dx}=\]

\[-n\,\,b\sin \log {{\left( \frac{x}{n} \right)}^{n}}\]

\[n\,\,b\sin \log {{\left( \frac{x}{n} \right)}^{n}}\]

\[-n\,b\sin \log {{\left( \frac{x}{n} \right)}^{n}}\]

If \[y=b\cos \log {{\left( \frac{x}{n} \right)}^{n}}\], then \[\frac{d

1.	If \[y=b\cos \log {{\left( \frac{x}{n} \right)}^{n}}\], then \[\frac{dy}{dx}=\]
A.	\[-n\,\,b\sin \log {{\left( \frac{x}{n} \right)}^{n}}\]
B.	\[n\,\,b\sin \log {{\left( \frac{x}{n} \right)}^{n}}\]
C.	\[-n\,b\sin \log {{\left( \frac{x}{n} \right)}^{n}}\]
D.	None of these
Answer» D. None of these

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If \[y=b\cos \log {{\left( \frac{x}{n} \right)}^{n}}\], then \[\frac{dy}{dx}=\]

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