It is given that
圖片參考：http://imgcld.yimg.com/8/n/HA07949917/o/701111030059713873396640.jpg
Q1. Find the value of g(2)
Answer: 2
Q2. Find the values of x such that g(x) = -1
Answer: -1 or 1
計算過程唔該詳細表達, thx!
F.4 Math (Function)
2011-11-04 2:52 am
回答 (1)
2011-11-04 3:16 am
✔ 最佳答案
g(x + 1/x) = x² + 1/x²==>g(x + 1/x) = (x + 1/x)² - 2==>g(x) = x² - 2************************************Q1 Find the value of g(2).g(2) = 2² - 2 = 4
Q2 Find the values of x such that g(x) = - 1g(x) = - 1x² - 2 = - 1x² = 1x = - 1 or 1
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