The tutor shares best practices for charging a smart phone. Most people know that there’s probably a “better” way to charge a smartphone. What is it? Conversely, what are some practices to avoid? Apparently, the best habit is to keep …

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The tutor shares his discovery of English oak in Campbell River. English oak is easy to zero in on around here. First of all, it’s a white oak: the leaf lobes are round, rather than pointed. (Pointed means red oak.) …

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The tutor shares a nice find from his walk home today: an American sycamore tree. Sometimes, identifying a tree, one can’t get so close as one might like: the tree might be on private property, so the viewer can’t inspect …

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The tutor brings up an oft-seen ornamental in populated areas of Vancouver Island: the California poppy. California poppies are hardy plants on Vancouver Island fields, and they’re perennial. They’re typically around 40cm tall, with netted foliage that isn’t very noticeable. …

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The tutor shows that limx→0 sinx/x = 1 using l’Hôpital’s rule. Put very simply, l’Hôpital’s rule states that for a situation where Limit f(x)/g(x) = 0/0, Limit f(x)/g(x) = Limit f'(x)/g'(x), provided f(x), g(x) are both differentiable and so on. …

Calculus: l’Hôpital’s rule: another proof that limx→0 sinx/x = 1 Read more »

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The tutor tells how to determine the version of Python the server is using. I’ve found two ways to print out the version of Python used by the remote server: import platform print “Content-type: text/html\n\n” print(platform.python_version()) or else import sys …

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The tutor gives a few ideas about email habits. I don’t use email much; at times I’ve used it more. Email is a type of communication that, because it’s recorded, perhaps needs special preparation before engaging. Here are some hints …

Academic habits, Lifestyle: preliminary ideas about successful email communication Read more »

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