1.

d/(dx)[log_(e) {(e^x + 2) + sqrt(e^(2x )+ 4e^x+ 5))}] =

Answer»

`1/(sqrt(E^(2x) + 4e^(x) + 5))`
`(e^x)/(sqrt(e^(2x) + 4e^(x) + 5))`
`(e^x)/(sqrt(e^(2x) + 4e^(x) + 3))`
`(-e^x)/(sqrt(e^(2x) + 4e^(x) + 3))`

Answer :B


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