sin(X)/x的幂级数
和海霞回答:
sin(x)=x-x^3/3!+x^5/5!-x^7/7!+.
sin(x)/x=1-x^2/3!+x^4/5!-x^6/7!+.
sin(x)/x=Σ_(n=0)^(∞)(-1)^nx^2n/(2n+1)!
相关文章:
sin(X)/x的幂级数
和海霞回答:
sin(x)=x-x^3/3!+x^5/5!-x^7/7!+.
sin(x)/x=1-x^2/3!+x^4/5!-x^6/7!+.
sin(x)/x=Σ_(n=0)^(∞)(-1)^nx^2n/(2n+1)!