Use the linear approximation (1+x)^kapprox 1+kx to find an approximation for the function f(x) for values of x near zero.
a.) f(x)=(1-x)^(8) approx
b.) f(x)=-8/(1-x) = approx
c.) f(x)= 1/(sqrt(1+x)) = approx
d.) f(x)=sqrt(4+x^2) approx =
e.) f(x)=(6+3x)^(1/3) approx =