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Mathematics Paper - 2012 - Set - 1 - CBSEcbse.nic.in/curric~1/qp2012/SamplePaperX11/Set1/...6. 2 dx 4 Evaluate 2 dx 4 ex (tan x + I) sec x dx = ex f(x) + c f(x) t I ex (tan x + 1)

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