(1)2log5*10+log5*0.25(2)log2(log2*16)(3)lg12.5-lg5/8+lg0.5第三题:y=√(x²+3x+2)+log2*3x的定义域是?
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(1)2log5*10+log5*0.25(2)log2(log2*16)(3)lg12.5-lg5/8+lg0.5第三题:y=√(x²+3x+2)+log2*3x的定义域是?
(1)2log5*10+log5*0.25
(2)log2(log2*16)
(3)lg12.5-lg5/8+lg0.5
第三题:y=√(x²+3x+2)+log2*3x的定义域是?
(1)2log5*10+log5*0.25(2)log2(log2*16)(3)lg12.5-lg5/8+lg0.5第三题:y=√(x²+3x+2)+log2*3x的定义域是?
(1)2log5*10+log5*0.25
=log5*10²+log5*0.25
=log5*(10²×0.25)
=log5*25
=log5*5²
=2
(2)log2(log2*16)
=log2*(log2*2^4)
=log2*4
=log2*2²
=2
(3)lg12.5-lg5/8+lg0.5
=lg(12.5×5/8×0.5)
=lg10
=1
第三题:y=√(x²+3x+2)+log2*3x的定义域是?
根号下大于等于0,真数大于0
所以x²+3x+2=(x+1)(x+2)≥0
x≤-2,x≥-1
3x>0
x>0
所以定义域(0,+∞)
1. 2Log5*10 + Log5*0.25 = log5*(10^2) + Log5*0.25 = Log5(100*0.25)
=Log5*25 = 2
2. log2(log2*16) = log2(4) = 2
3. lg12.5 - lg5/5 + lg0.5 = lg(12.5/(5/8)*0.5) = lg100 = 2
计算(2lg5^2+log5^3)/(log5^10+0.5log5^0.36+1/3log5^8)
2log5(10)+log5(0.25)=?急用
计算:2log5 10+log5 0.25+5log5 25 (都是以5为底的.)
log5 2+log5 3+log5 1/6=?
2log5^10+log5^0.25=?
计算2log5^10+log5^0.25=
2log5 10+log5 0.25=?
2log5 10+log5 0.25等于多少?
2log5 10+log5 0.25 怎样计算,
log5(35)-2log5(7/3)+log5(7)-log5(1.8)
对数 log5(35)+2log1/2( 根号2)-log5(1/50)-log5(14)log5(35)+2log1/2( 根号2)-log5(1/50)-log5(14)
5^2log5^10-1等于多少?
log5·log5(3)·log5(1/3)log3(5)·log5(3)·log5(1/3)log3(2)·log5(3)·log8(5)不好意思
8^(-1/3)+log3(1/27)+log6(5)*[log5(2)+log5(3)]+10^lg3=?
计算:2log5 10+log5 0.25=______
求解2(log5)10+(log5)0.25麻烦啦
计算题.2log5 10+log5 0.25(5是底数)
解方程:log5(2x+1)=log5(x2-2)