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[[13|" If "y=(cos x)^(x)+(x)^(cos x)" th...

[[13|" If "y=(cos x)^(x)+(x)^(cos x)" then find "(dy)/(dx)],[[" Ans."(dy)/(dx)=x^(cos x)[(cos x)/(x)-sin x log x]+(cos x)^(x)[log(cos x)-x tan x]]

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