負(fù)整數(shù)指數(shù)冪

01情境導(dǎo)入02問(wèn)題導(dǎo)探03典例導(dǎo)練04小結(jié)導(dǎo)構(gòu)冪的有關(guān)運(yùn)算性質(zhì)有哪些？6①同底數(shù)冪相乘②冪的乘方③積的乘方④同底數(shù)冪相除⑤分式的乘方

m,n是正整數(shù)m,n是正整數(shù)n是正整數(shù)a≠0,m,n是正整數(shù),m>nn是正整數(shù)a≠0憶一憶1525負(fù)整數(shù)指數(shù)冪02問(wèn)題導(dǎo)探01情境導(dǎo)入03典例導(dǎo)練04小結(jié)導(dǎo)構(gòu)a5÷a3=a3÷a5=？

a2同底數(shù)冪的除法：分式的性質(zhì)：

算一算想一想a-n=？02問(wèn)題導(dǎo)探01情境導(dǎo)入03典例導(dǎo)練04小結(jié)導(dǎo)構(gòu)負(fù)整數(shù)指數(shù)冪的運(yùn)算性質(zhì)一般地，當(dāng)n是正整數(shù)時(shí),這就是說(shuō)，a-na≠0是an的倒數(shù)

a≠002問(wèn)題導(dǎo)探01情境導(dǎo)入03典例導(dǎo)練04小結(jié)導(dǎo)構(gòu)

填一填02問(wèn)題導(dǎo)探01情境導(dǎo)入03典例導(dǎo)練04小結(jié)導(dǎo)構(gòu)把下列各式轉(zhuǎn)化為只含有正整數(shù)指數(shù)冪的形式

寫(xiě)一寫(xiě)02問(wèn)題導(dǎo)探01情境導(dǎo)入03典例導(dǎo)練04小結(jié)導(dǎo)構(gòu)a3●a-5=a-3●a-5=a0●a-5=a-2am●an=amn歸一歸a-8a-5m、n為任意整數(shù)02問(wèn)題導(dǎo)探01情境導(dǎo)入03典例導(dǎo)練04小結(jié)導(dǎo)構(gòu)整數(shù)指數(shù)冪的性質(zhì)m、n是整數(shù)

2－3可以表示為A．－2×－2×－2B．22×25C．25÷22D．22÷25選一選02問(wèn)題導(dǎo)探01情境導(dǎo)入03典例導(dǎo)練04小結(jié)導(dǎo)構(gòu)03典例導(dǎo)練01情境導(dǎo)入02問(wèn)題導(dǎo)探04小結(jié)導(dǎo)構(gòu)例1計(jì)算

03典例導(dǎo)練01情境導(dǎo)入02問(wèn)題導(dǎo)探04小結(jié)導(dǎo)構(gòu)例1計(jì)算

03典例導(dǎo)練01情境導(dǎo)入02問(wèn)題導(dǎo)探04小結(jié)導(dǎo)構(gòu)練1計(jì)算

選一選02問(wèn)題導(dǎo)探01情境導(dǎo)入03典例導(dǎo)練04小結(jié)導(dǎo)構(gòu)03典例導(dǎo)練01情境導(dǎo)入02問(wèn)題導(dǎo)探04小結(jié)導(dǎo)構(gòu)例2計(jì)算

03典例導(dǎo)練01情境導(dǎo)入02問(wèn)題導(dǎo)探04小結(jié)導(dǎo)構(gòu)練2計(jì)算

03典例導(dǎo)練01情境導(dǎo)入02問(wèn)題導(dǎo)探04小結(jié)導(dǎo)構(gòu)

03典例導(dǎo)練01情境導(dǎo)入02問(wèn)題導(dǎo)探04小結(jié)導(dǎo)構(gòu)

03典例導(dǎo)練01情