The tutor delivers the goods about how to create vertical space in a text. I don’t text very often, but much more than before. I’m learning how to do it better. Whatever message I’m sending, be it a solution on …

Lifestyle: mobile phones: how to create a newline when texting (Android, Nexus 4) Read more »

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The tutor shares another backyard identification. If a person isn’t looking closely, a white-crowned sparrow is easy to miss, even in the yard. They forage on the ground, but can seem from a distance to be dull-colored and “just another …

Lifestyle: bird identification from field guide: white-crowned sparrow Read more »

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The tutor attempts to explain a possible misunderstanding. A few days ago I posted about buying my kids each a 16GB flash drive by PNY. Today I showed my younger kid how to access it on Windows (he’s used to …

Home computer use: why 16GB might become 14.8GB from the computer’s point of view Read more »

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The tutor shares another backyard bird identification. Similarly with Audubon’s warbler (see my post about it here), I could only identify the rufous-sided towhee through the binoculars. I heard the call, detected flitting in a hedgerow, then raised the binoculars …

Lifestyle: bird identification from field guide: rufous-sided towhee Read more »

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The tutor works a limit using the log trick and l’Hôpital’s rule. Example: Evaluate limn→∞n^(1/n) Solution: First, imagine y=limn→∞n^(1/n) Next, we take the logarithm of both sides: lny=lnlimn→∞n^(1/n) Now, because both lny and n^(1/n) are continuous n→∞, we can change …

Calculus: the limit, as n tends to infinity, of nth root of n. Read more »

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