Problem 4 (a) 1/3 (b) sqrt(2)

Problem 12 ln(3)+ 2*ln(x)-5ln(x+1)

Problem 14 ln((x²-y²)/z²))

Problem 2 f'(x) = 1/(x-2)

Problem 4 f'(x) = -sin(ln(x))/x

Problem 8 G'(x) = 1/(3x (ln(x)^2/3 )

Problem 10 f'(t) = 2/( t (1-ln(t))² )

Problem 12 h'(x) = 1/sqrt(x²-1)

Problem 34 f'(1) = 1

Problem 66 -3

Problem 76 ln(e^x+1) + C