a,b,c,为正数,且2^a=log(1/2)a,(1/2)^b=log(1/2)b,(1/2)^c=log(2)c,求
[log (底数为a) x]=[1\2log (底数为a) b ] - [ log (底数为a)c]求X
a,b,c,为正数,且2^a=log(1/2)a,(1/2)^b=log(1/2)b,(1/2)^c=log(2)c,求
设a、b、才均为正数,且2^a=log(1/2)a、(1/2)^c=log(2)c、(1/2)^b=log(1/2)b,
设a,b,c是直角三角形的三边长,其中c为斜边,且c≠1,求证:log(c+b)a+log(c-b)a=2log(c+b
对数函数题 log a - log b = 3 log (c/2) 求 a = ______________
2^a=log(1/2)a,(1/2)^b=log(1/2)b,(1/2)^c=log(2)c,比较a,b,c的大小
已知a、b、c为直角三角形三边,c为斜边.log(a+b)+log(c-b)=2log(b+c)alog(c-b)a
设a、b为正数,且2^a=log(1/2)a,(1/2)^b=log(1/2)b,(1/2)^c=log2c,则比较a,
利用换底公式证明:log(a)b.log(b)c.log(c)a=1
如果a平方+b平方=c平方且c± b≠1.求证:log(c+b)a+log(c-b)a=2log(c+b)a×log(c
设a,b,c均为正数,且2的a次幂=log(1/2)a,﹙1/2﹚的b次幂=log﹙1/2﹚b,
2log(b)x=log(a)x+log(c)x