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Differentiate the functions given w.r.t....

Differentiate the functions given w.r.t. x:
`cosx cos2x cos3x`

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To differentiate the function \( y = \cos x \cos 2x \cos 3x \) with respect to \( x \), we can use the logarithmic differentiation method. Here’s a step-by-step solution: ### Step 1: Take the natural logarithm of both sides We start by taking the natural logarithm of both sides: \[ \ln y = \ln(\cos x \cos 2x \cos 3x) \] ...
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