Hi there!
Do you have scads of pending matters at the office? The backlog is your pain in the neck? Don’t worry. It’s a commonplace sight in the corporate world.
At my trading company, how soon you can handle pending matters influenced my job assessment and endorsed part of my job performance of a high caliber. Managers always watched and saw whose pending box had less stack of documents to be dealt with.
One of my seniors was incredibly cunny and threw his pending letters or telexes into my task box that had yet to answer when leaving the office. What a class act, you know. Nice guys finish last.
I’m now self-employed and have no worries about a bunch of backlogs. Given my current flexibility, let me challenge the differentiation of a log function.
Differentiate the log function \(y = (\log x)^{3}\).
Here is my solution to the problem.
Let’s use the composite function.
Put \(\log\,x = u\), then \(y = u^{3}\).
\(\frac{dy}{dx} = \frac{dy}{du}・\frac{du}{dx} = 3u^{2}・\frac{1}{x} = \frac{3(log\,x)^{2}}{x}\)
An old friend from high school moved to Nagano prefecture to build a log house after quitting a university halfway through. What is he up to?
Stay tuned, and expect to see my next post.
Keep well.
Frank Yoshida
￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣￣
【グローバルビジネスで役立つ数学】でもっと学習する b＾＾)
【参考図書】『もう一度高校数学』（著者：高橋一雄氏）株式会社日本実業出版社
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