已知函数f(x)=loga(x²–2) 若f(2)=1 (1)求a的值(2)求f(3根号2)的值(已知函数f(x)=loga(x²–2) 若f(2)=1(1)求a的值(2)求f(3根号2)的值(3)解不等式f(x)∠f(x+2)
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![已知函数f(x)=loga(x²–2) 若f(2)=1 (1)求a的值(2)求f(3根号2)的值(已知函数f(x)=loga(x²–2) 若f(2)=1(1)求a的值(2)求f(3根号2)的值(3)解不等式f(x)∠f(x+2)](/uploads/image/z/5454704-56-4.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dloga%28x%26%23178%3B%E2%80%932%29+%E8%8B%A5f%282%29%3D1+%281%29%E6%B1%82a%E7%9A%84%E5%80%BC%282%29%E6%B1%82f%283%E6%A0%B9%E5%8F%B72%29%E7%9A%84%E5%80%BC%28%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dloga%28x%26%23178%3B%E2%80%932%29+%E8%8B%A5f%282%29%3D1%281%29%E6%B1%82a%E7%9A%84%E5%80%BC%282%29%E6%B1%82f%283%E6%A0%B9%E5%8F%B72%29%E7%9A%84%E5%80%BC%283%29%E8%A7%A3%E4%B8%8D%E7%AD%89%E5%BC%8Ff%28x%29%E2%88%A0f%28x%EF%BC%8B2%29)
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已知函数f(x)=loga(x²–2) 若f(2)=1 (1)求a的值(2)求f(3根号2)的值(已知函数f(x)=loga(x²–2) 若f(2)=1(1)求a的值(2)求f(3根号2)的值(3)解不等式f(x)∠f(x+2)
已知函数f(x)=loga(x²–2) 若f(2)=1 (1)求a的值(2)求f(3根号2)的值(
已知函数f(x)=loga(x²–2) 若f(2)=1
(1)求a的值(2)求f(3根号2)的值(3)解不等式f(x)∠f(x+2)
已知函数f(x)=loga(x²–2) 若f(2)=1 (1)求a的值(2)求f(3根号2)的值(已知函数f(x)=loga(x²–2) 若f(2)=1(1)求a的值(2)求f(3根号2)的值(3)解不等式f(x)∠f(x+2)
(1)f(2)=log(a,2)=1
所以a=2
(2)f(3√2)=log(2,16)=4
(3)a=2>1
log(2,x²-2)0
x²-2-1
所以x>√2.