高数公式大全第1页共20页高等数学公式汇总第一章一元函数的极限与连续1、一些初等函数公式:sin()sincoscossincos()coscossinsintantantan()1tantancotcot1cot()cotcot()()shshchchshchchchshshmmm和差角公式:sinsin2sincos22sinsin2cossin22coscos2coscos22coscos2sinsin22和差化积公式:1sincos[sin()sin()]21cossin[sin()sin()]21coscos[cos()cos()]21sinsin[cos()cos()]2积化和差公式:2222222222sin22sincoscos22cos112sincossin2tantan21tancot1cot22cot2221221shshchchshchchsh倍角公式:高数公式大全第2页共20页22222222sincos1;tan1sec;cot1csc;11cossin221coscos221cos1cossintan21cossin1cos1cos1cossincot21cossin1cosxxxxchxshx半角公式:22::ln(12::ln(1)211::ln21xxxxxxxxeeshxarshxxxeechxarchxxxshxeexthxarthxchxeex双曲正弦;反双曲正弦)双曲余弦;反双曲余弦双曲正切;反双曲正切3322()()()ababaabbm,222(1)(21)126nnnnL22333(1)124nnnL2、极限
常用极限:1,lim0nnqq;1,lim1nnaa;lim1nnn
ln(1())limln(1())~()()lim[()()]1/()()0,(),lim[1()]fxfxfxgxfxgxgxfxgxfxee若