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Q30 of 354 Page 12

Find , when
y = (tan x)^{log x} + cos²

⇒ y = a + b

a= (tan x)^{log x}

Taking log both the sides:

⇒ log a= log (tan x)^{log x}

⇒ log a= log x . log (tan x)

{log x^a = alog x}

Differentiating with respect to x:

Differentiating with respect to x:

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