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1、MATLAB常用数学函数 三角函数和双曲函数名称含义名称含义名称含义sin正弦csc余割atanh反双曲正切cos余弦asec反正割acoth反双曲余切tan正切acsc反余割sech双曲正割cot余切sinh双曲正弦csch双曲余割asin反正弦cosh双曲余弦asech反双曲正割acos反余弦tanh双曲正切acsch反双曲余割atan反正切coth双曲余切atan2四象限反正切acot反余切asinh反双曲正弦 sec正割acosh反双曲余弦 l 指数函数名称含义名称含义名称含义expE为底的指数log1010为底的对数pow2
2、2的幂log自然对数log22为底的对数sqrt平方根l 复数函数名称含义名称含义名称含义abs绝对值conj复数共轭real复数实部angle相角imag复数虚部 l 圆整函数和求余函数名称含义名称含义ceil向+∞圆整rem求余数oftheaudit. Fireisacombinationofauditinginthefieldoflawenforcementlawenforcementjobrotationandfirepracticeoflawenforcement,inthepromotionchanged,r
3、etrainingretiredkeytimingsynchronizationinplaceauditmechanism,andconducivetoself-urgedself-restraint,thefirelawenforcement,toprotectthemselves.1.3preventivefire-fightingurgedthecurrentfirelawenforcementcorruptioninvolvingcasesofviolatinglawenforcementhasanupwardtrend,judgingfrom
4、nationalreportsofcomplaintsinrecentyears,reportedcasesreflectthefirelawenforcementisover50%.Inaddition,themultiplecorruptioncases,withahighincidenceofleadingcadres,asmallnumberofleadingcadres'corruption,corrupt,power-for-moneytransaction,especiallyteams,groupreportingincreasingc
5、omplaintsinvolvingthesupervisionoflawenforcementjobs,bringgreatpressuretoforcehonestandseriouschallenges.Meanwhile,teamandBrigadelevelsbearanadministrativelicenseapproval,administrativepunishment,routineinspectionsandmorethan95%oftheamount,somefirestaffhandledayeargothroughlegal
6、instrumentsandthousandsofcontacthundredsofsocialunits,onceinsidelax,theirqualityisnothigh,extremelyeasytoinducedisciplineandcorruption. Inpracticaloperation,thefirelawenforcementas"athletes"and"umpire"internalinspector,inspection,testandnotenoughproblemtouchesnotfoundtoleadingp
7、olicymakers,deviatefromsystemdesign,systemimplementationhastodealwith. 2buildingfirelawfix向0圆整round向靠近整数圆整floor向-∞圆整sign符号函数mod模除求余 l 矩阵变换函数名称含义名称含义fiplr矩阵左右翻转diag产生或提取对角阵fipud矩阵上下翻转tril产生下三角fipdim矩阵特定维翻转triu产生上三角Rot90矩阵反时针90翻转 l 其他函数名称含义名称含义min最小值max最大值mean平均值m
8、edian中位数std标准差diff相邻元素的差sort排序length个数norm欧氏（Eu
