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Prove that e^x+sqrt(1+e^(2x))geq(1+x)+sq...

Prove that `e^x+sqrt(1+e^(2x))geq(1+x)+sqrt(2+2x+x^2)AAx in R`

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  12. Prove that e^x+sqrt(1+e^(2x))geq(1+x)+sqrt(2+2x+x^2)AAx in R

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  13. Find which of the two larger en (1+x) " or " (tan^(-1)x)/(1+x).

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