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If f(x)=∫cot x0tan−1(t)dt+∫tan x0cot−1t dt,if0<x<π2,thenf(π4) is equal to

Answer» If f(x)=cot x0tan1(t)dt+tan x0cot1t dt,if0<x<π2,thenf(π4) is equal to


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