设F(χ)=f(χ)g(χ),其中函数f(χ),g(χ)在(-∞,+∞)内满足以下条件: f’(χ)=g(χ),g’(χ)=f(χ),且f(0)=0,...

作者: tihaiku 人气: - 评论: 0
问题 设F(χ)=f(χ)g(χ),其中函数f(χ),g(χ)在(-∞,+∞)内满足以下条件: f’(χ)=g(χ),g’(χ)=f(χ),且f(0)=0,f(χ)+g(χ)=2eχ。 (1)求F(χ)所满足的一阶微分方程; (2)求出F(χ)的表达式。
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错误啦!

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  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
  • 文件: /twcms/kongphp/cache/cache_redis.class.php
  • 位置: 第 85 行
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