请教几道高一的数学题目?(简单)
表达的不是很清楚，不知道我理解的对不对第一题。 [(16S^2)(T^-6)/(25R^4)]^(-3/2)={(16S^2)/[(25R^4)(T^-6)}^(-3/2)=[25(R^4)(T^-6)/(16S^2)]^(3/2)=[5(R^2)(T^-3)/(4S)]^3=125(R^6)(T^-9)/(64S^3)第二题[-2X^(1/4)Y^(-1/3)][3X^(-1/2)Y^(2/3)][-4X^(1/4)Y^(2/3)]=(-2)*3*(-4)X^(1/4-1/2 1/4)Y^(-1/3 2/3 2/3)=24Y第三题[-2X^(1/4)][2X^(1/2)-3Y^(1/4...全部
表达的不是很清楚，不知道我理解的对不对第一题。
[(16S^2)(T^-6)/(25R^4)]^(-3/2)={(16S^2)/[(25R^4)(T^-6)}^(-3/2)=[25(R^4)(T^-6)/(16S^2)]^(3/2)=[5(R^2)(T^-3)/(4S)]^3=125(R^6)(T^-9)/(64S^3)第二题[-2X^(1/4)Y^(-1/3)][3X^(-1/2)Y^(2/3)][-4X^(1/4)Y^(2/3)]=(-2)*3*(-4)X^(1/4-1/2 1/4)Y^(-1/3 2/3 2/3)=24Y第三题[-2X^(1/4)][2X^(1/2)-3Y^(1/4)]第四题[4X^(1/4)][-3X^(1/4)Y^(-1/3)]/[-6X^(-1/2)Y^(2/3)]=-12X^(1/2)Y^(-1/3)]/[-6X^(-1/2)Y^(2/3)]=2XY^(-1) (系数做减法)第五题LOG6-LOG3 （没有底）＝LOG(6/3)＝LOG2第六题LG5 LG2＝LG（5*2）＝LG10＝1第七题LOG（5^3） log[5^(1/3]=LOG{（5^3）*[5^(1/3]}=LOG1=0第八题LOG(3^5)-LOG(3^15)=LOG[(3^5)/(3^15)]=LOG[3^(-10)]=-10LOG3有问题可以qq我49106812。收起
