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数学
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f(x)=根号下1-x方 +根号下x方-1是奇函数还是偶函数?
人气:252 ℃ 时间:2019-09-19 22:53:35
解答
f(x)=√(1-x²)+√(x²-1)由题意得1-x²≥0且x²-1≤0,∴1≤x²≤1,即x²=1故x=±1,定义域{-1,1}关于原点对称f(-x)=√(1-(-x)²)+√((-x)²-1)=√(1-x²)+√(x²-...
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