集合A={0,log(1/2)3,-3,1,2},集合B={y∈2},:则A∩B=( ).求详解,

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/17 01:57:15
x){9Gjt C}#Mc]cCZmu壎 iLG+lPxSƦ뗽XX&HPu@aC0g3?ȁK%^uv>[:KOvv
集合A={log1/2(3-x)≥-2}(1/2是log下面的数),求集合A 集合A={0,log(1/2)3,-3,1,2},集合B={y∈2},:则A∩B=( ).求详解, 已知集合M={a^2-2a+3,2^a,log(2)a}已知集合M={a^2-2a+3,2^a,log(2)a},若1∈M,则实数a的取值集合为( )A.{0,1} B.{0,2} C.{2} D.{1}我好像越做越乱,进误区了! 已知0<a<1,x=log a 根号2+log a 根号3y=1/2 log a 5z=log a 根号21 -log a 根号3比较x y z 的大小关系x=log a (根号2)+log a (根号3)y=1/2 (log a 5)z=log a (根号21) -log a (根号3) 已知集合A={y|y=log[1/2]x,0 证明对数运算法则(1)log(a)(MN)=log(a)(M)+log(a)(N);   (2)log(a)(M/N)=log(a)(M)-log(a)(N);(1)log(a)(MN)=log(a)(M)+log(a)(N);   (2)log(a)(M/N)=log(a)(M)-log(a)(N);   (3)log(a)(M^n)=nlog(a)(M) (n∈R) 解方程[log(a)(x-1)]-[log(a)(2x-3)]=log(a)(1/3-x),(a>0,且a≠1). 设集合A={3,log以2为底a的对数},B={a,b},若A交B={0},则A并B 关于数学对数的换底公式推论的问题已知 log(2)(3) = a,log(3(7)=b,用a,b表示log(42)(56)因为log(2)(3)=a,则1/a=log(3)(2),又∵log(3)(7)=b,∴log(42)(56)=log(3)(56)/log(3)(42)=log(3)(7)+3·log(3)(2)/log(3)(7)+log(3)(2)+1=ab+3/ab+b+1 关于数学对数的换底公式推论的问题已知 log(2)(3) = a,log(3(7)=b,用a,b表示log(42)(56)因为log(2)(3)=a,则1/a=log(3)(2),又∵log(3)(7)=b,∴log(42)(56)=log(3)(56)/log(3)(42)=log(3)(7)+3·log(3)(2)/log(3)(7)+log(3)(2)+1=ab+3/ab+b+1 log(2)3=a,则log(6)4=( 设集合A={x∣2log以(1/2)为底x的对数的平方-21log以8为底数x的对数+3小于等于0},若当x∈A时,函数f(x)=log以2为底x/2^a的对数乘log以2为底x/4的对数 的最大值为2,求实数a的值 对数函数题 log a - log b = 3 log (c/2) 求 a = ______________ log a 2/3 log a(2/3) 已知函数f(x)=log a (1-x)+log a (x+3)(0 若log(2)3=(1-a)/a则log(3)12RT求详解 Log(2)1/25•log(3)1/8•log(5)1/9化简 还有已知log(18)9=a,log(18)5=b求log(36)45 值