Question 180834
find the derivative.
1. x = ln(x+y+1) 

1 = [1/(x+y+1)](1 + (y'))

y' = [x+y+1] -1
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and 
2. F(x) = sqrt(1 + x)- ln[1 + sqrt(x + 1)]

F'(x) = (1/2)(1+x)^(-1/2) - [1/(1+sqrt(x+1)] * [(1/2)(x+1)^(-1/2)]
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Cheers,
Stan H.