函数f(x)满足{(1/2)^x ,x≤1 log以16为底的x,x>1 则满足f(x)=1/4 的x的值为
人气:394 ℃ 时间:2020-04-13 06:25:51
解答
x<=1
f(x)=(1/2)^x=1/4=(1/2)^2
x=2
不符合x<=1
舍去
x>1
log16(x)=1/4
x=16^(1/4)=2,满足x>1
所以x=2
推荐
猜你喜欢
- 一辆汽车从甲地到乙地,行了全程的40%,离终点还有5千米,甲乙两地相距多少千米
- the big minute hand did not move.为什么不是the big minute hand was not move.
- However mean your life is,meet it and live it ;do not shun it and call it hard names.It is not so bad as you are.It look
- 已知直线l1:y=x+m和L2:y=-2x+n交于点P(-2,0),l1交y轴于点A,l2交y轴于点B.
- 『汉译英』“第二,我们应该把老师当成朋友.不要害怕老师,多与老师相处.”求翻译
- 士不可不弘毅,任重而道远.
- 民族资本主义与官僚资本主义的区别
- "我来了,我看见了,我征服了"的英文原文是什么?