已知log5(x+2x-2)=0,2log5(x+2)-log5y+1/2=0,求y的值
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已知log5(x+2x-2)=0,2log5(x+2)-log5y+1/2=0,求y的值
已知log5(x+2x-2)=0,2log5(x+2)-log5y+1/2=0,求y的值
已知log5(x+2x-2)=0,2log5(x+2)-log5y+1/2=0,求y的值
log5(x+2x-2)=0 x+2x-2=1 x+2x-3=0 (x-1)(x+3)=0 后面的真数x+2>0 所以x=1 2log5(x+2)-log5y+1/2=0 2log5(3)-log5(y)+1/2=0 log5(y)=log5(3)+log5(5^1/2)=log5(9√5) y=9√5
log5(x^2+2x-2)=0,即 x^2+2x-2=1 x=1或x=-3(舍去) 2log5(x+2)-log5y+1/2=0,即 log5[3^2√5/y]=0,即 9√5/y=1 y=9√5 求采纳
解方程:log5(2x+1)=log5(x2-2)
已知log5(xˆ2;+2x-2)=0,2log5(x+2)-log5y+1/2=0,求y值
已知log5(x+2x-2)=0,2log5(x+2)-log5y+1/2=0,求y的值
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额,求解指数方程log5(2x²-3x+1) -log5(x-1)+log5(125)=6谢啦,log后的5都是底数!
log5(x^2+2x-2)=0,2log5(x+2)-log5y+1/2=0求y底数皆为5,
log5 2+log5 3+log5 1/6=?
一道高一数学题对数log2,详见补充已知log2[log1/2(log2^x)]=log3[log1/3(log3^y)]=log5[log1/5(log5^z)]=0,试比较x,y,z的大小?
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计算2log5^10+log5^0.25=
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