Find the derivative of the function. y = cos5x−−√

y-cosmathsqrt5xmath

#1

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Answer:

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Given
y=cos√5x
let… u=√5x
y=cosu…dy/du=-sinu…=-sin√5x
du/dx=√5/2√x
from the chain rule
dy/dx=du/dxdy/du
=√5/2√x
-sin√5x
=-(√5sin√5x)/2√x