log0.5x22x32

（log5/log2+log0.2/log0.5)(log2/log0.2+log0.5/log5)怎麼算计算机等於-4首先,有这么一个规律lg0.2=lg5^(-1)=-lg5对数的底数也满足这个规律所以呢log0.2/log0.5=lo

log0.2(4/5)和log0.3(4/5)log2(4/3)和log0.2(4/3)比大小log后面均为下标因为loga(x)在（0,1）a越小越靠近y轴所以log0.3(4/5)log0.2(4/3)

函数Log0.5²-log0.5x=2单调减区间没有下标?这是方程，不是函数啊！

y=log0.5(1-x)+log0.5(x+3)的最值原式就是y=log0.5(1-x)（x+3）那么设内函数为g（x）=（1-x）（x+3）=-（x+3）（x-1）原式的定义域是要让1-x＞0x+3＞0所以-3＜x＜1那么由函数g（x）

解不等式log0.5x>log0.5(1-x)和log2(x+3)＜0∵log0.5x>log0.5(1-x)∴0log0.5x>log0.5(1-x)00log2(x+3)0-3解:先考虑定义域x>01-x>0x+3>0再考虑函数单调性x

log0.5(10-x)>-log0.5x(0.5是底数)求不等式的解根据定义域有10-x＞0和x＞0解得0＜x＜10……①原式可以化为log0.5(10-x)>log0.51／x因为y=log0.5x是减函数所以10-x＜1／x因为x＞0

试求满足不等式2（log0.5x）2+9log0.5x+9试求满足不等式2log²‹1/2›x+9log‹1/2›x+9≦0的x的取值范围?设log‹1/2›

函数y=log0.25x-log0.5x+2的单调减区间是y=log0.25x-log0.5x+2=log1/4(x)-log1/2(x)+2=-1/2log2(x)-log1/2(x)+2=log2(x^1/2)+2x^1/2>0x>0令

求函数y=(log0.5x)(log0.5x)+log0.5x-2在在【1,4】上的值域y=(log0.5x)(log0.5x)+log0.5x-2=(log0.5x+1/2)²-9/4已知x∈[1,4]则log0.5x∈[-2,

若x满足不等式2(log0.5x)∧2+7log0.5x+3≤0,则f(x)=log0.5(x/2)log0.5(x/4)的最大值?A.3B.2C.1D.1/2由不等式可求出log2x的范围为大于1/2小于3f(x)可化简为(log2x-3

若x满足不等式2(log0.5x)∧2+7log0.5x+3≤0,则f(x)=log0.5(x/2)log0.5(x/4)的最值?2(log0.5x)∧2+7log0.5x+3≤0[2(log0.5x)+1]*[(log0.5x)+3]≤0

一道简单的对数方程log0.5x(2)-log0.5x^3(x^2)=log0.5x^3(4)括号内是真数，括号外是底数原式化简是ln2/(lnx-ln2)-2lnx/(3lnx-ln2)=2ln2/(3lnx-ln2)然后为了描述方便,另

若log2(3-2x)+log0.5(3x-1)log2(3-2x)-log2(3x-1)2/5综上所述,范围是2/5

函数y=根号下log0.5tanx的定义域y=√[log0.5(tanx)](0.5为底数）①tanx>0=tan0②log0.5(tanx)≥0=log0.5（1）=log0.5（tanπ/4）0首先根号内数要大于0所以log0.5tan

y=根号下log0.5sinx的定义域是答：y=√[log0.5(sinx)]定义域满足：log0.5(sinx)>=0sinx>0所以：0

函数y=1/log0.5x的图像这个函数其实是y=logx0.5.它的图不唯一,当0

函数y=log2(log0.5x)的定义域（0,1）由题得0.5x>0;log0.5x>0即x>0,0.5x>1;解得:x>2;0

函数y=log2(log0.5^x)的定义域log2(log0.5^x)的真数大于0log0.5^x>0=log0.5^10log0.5^x是减函数所以x真数x大于0所以定义域(0,1)原数=(m+2i)(1+i)/(1-i)(1+i)=(

不等式log0.5x＜1的解集log0.5x＜1log0.5x＜log100{x|x>0.5}0

不等式log0.5x>-2的解集log0.5x>-2log0.5x>log0.5(4)0log0.5x>-2=-2log0.5(0.5)=log0.5(1/2)^(-2)=log0.5(4)0