sinx=sin0+cos0*x-sin0*x^2/2-cos0*x^3/3!+sin0*x^4/4!+cos0*x^5/5!=x-x^3/6+x^5/120e^x-1=e^0+e^0*x/1+x^2/2+x^3/3!+……-1=x+x^2/2+x^3/6+x^4/24这个都是加号,最大ln(x+1)=ln1+1/(0+1)*x/1   -1/(0+1)^-2*x^2...