The tutor tells another useful feature of the Sharp EL-520W: its built-in gravity constants. Maybe you’re in high school physics, so you’re doing calculations related to gravity. You might be using the Earthbound formula F=mg, or the universal one, F=Gm1m2/r2. …
Calculator usage: the gravity constants on the Sharp EL-520W Read more »
The tutor covers a topic he’s surprised to have missed: using the memory of the Casio fx-260solar. I always have a Casio fx-260solar around. It’s economical and reverse-entry, similar to the calculators I grew up with. However, I’ve never used …
Calculator usage: using the memory on the Casio fx-260solar Read more »
The tutor explains his recent understanding of a function he’s wondered about. I’ve noticed the ENG function on more than one calculator, but have never used it. I’ve always assumed it means “engineering”; since I’m not one, it makes sense …
Calculator usage: The ENG function on the Casio fx-260solar Read more »
The tutor offers a couple of illustrations of an important concept from trigonometry. When an angle is drawn in standard position, it opens counterclockwise from the positive x axis. Example 1: Show the angle 160° in standard position, along with …
The tutor answers a question that brought someone to his site. These days, Oracle Tutoring gets between 5000 and 6000 distinct visitors per month. Looking over the raw log entries of how some visitors arrived, I saw an inquiry yesterday …
The tutor shares how to find the derivative with the Sharp EL-520W. To my knowledge, the Sharp EL-520W won’t give the symbolic derivative. Rather (as you’d likely expect anyway), it evaluates a function’s derivative at the x value the user …
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The tutor shares a feature of LibreOffice Calc that’s very convenient. I don’t evaluate determinants very often, but in the past I’ve done it a few times. I find it’s a process that requires care. LibreOffice Calc will evaluate the …
Spreadsheets: LibreOffice Calc: the determinant of a matrix Read more »
The tutor mentions how to change trig units on the Staples BD-6120G. For grade 10 and 11 math students, degree mode is probably needed. You know if you’re in degree mode by a capital D at the top of the …
Calculator usage: degree, rad and grad mode on the Staples BD-6120G Read more »
The tutor covers a simple, yet powerful feature of the Texas Instruments TI-30xa. Using the memory can save time in multi-step calculations. With the TI-30xa, here’s how: Enter the number you want to store on the display. (It can also …
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The tutor covers a couple of fun features of the Staples BD-6120G. The Staples BD-6120G is a scientific calculator, but it’s got some neat features useful to buyers and sellers as well. In particular, it’s got some very handy percentage …
Calculator usage: percentage markups and selling price with the Staples BD-6120G Read more »