y - f(x_(o)) = f `(x_(o)) * ( x - x_(o))
f)
f(0)=0+(1/(0+1))=1
f ` ( x) = ( x + (1/(x+1)))` = 1 - 1* (x+1)^(-2) = 1- (1/(x+1)^2)
f`(0)=1-1=0
y - 1 = 0
y=1 - уравнение касательной
2)
f(0)=sin0 - ln1=0-0=0
f ` (x) = cos2x*(2x)` - (1/(x+1))=2cos2x - (1/(x+1))
f`(0)=2-1=1
y-0 =1*(x-0)
y=x - уравнение касательной