Tutoring math, you encounter the differences between calculators even from the same manufacturer. Now, the tutor shows how to convert from rectangular to polar coordinates using the Casio fx-991ES PLUS C. In my post from May 18 I show how …
Tutoring calculus, you cover polar coordinates. The tutor shows how to convert from rectangular to polar coordinates on the Casio fx-260solar. Example: Convert the coordinates (-56,12) to polar with the Casio fx-260solar. Solution: Key in 56 +/- SHIFT + 12 …
Tutoring math or computer science, random numbers are often involved. The tutor shows the convenient random integer generator on the Casio fx-991ES PLUS C. Example: Generate a random integer between 10 and 89 using the Casio fx-991ES PLUS C. Solution: …
Calculator usage: how to use the random integer generator on the Casio fx-991ES PLUS C Read more »
Tutoring math, I’m impressed with the functions available on scientific calculators. The tutor shows the division and remainder function on the fantastic Casio fx-991ES PLUS C. Example: On the Casio fx-991ES PLUS C, find the quotient and remainder of 324 …
Calculator usage: division and remainder calculations with the Casio fx-991ES PLUS C Read more »
Tutoring statistics, you cover linear regression. The tutor shows how to get a best-fit line on the Casio fx-991ES PLUS C. Let’s imagine you have the following data x y 10.1 14.2 17.3 19.5 25.4 22.9 40.0 31.8 Furthermore, you’d …
Calculator usage: linear regression on the Casio fx-991ES PLUS C Read more »
Tutoring high school math, the prime factorization is a topic. The tutor shows the convenient prime factorization function on the Casio fx-991ES PLUS C. Example: using the Casio fx-991ES PLUS C, find the prime factorization of 225. Solution: Make sure …
Calculator usage: how to get the prime factorization on the Casio fx-991ES PLUS C Read more »
Tutoring statistics, you see lots of great calculators. The tutor shows how to calculate one-var standard deviation on the Casio fx-991ES PLUS C. Let’s imagine you want the standard deviation of the short list of numbers 23, -12, 0, 15, …
Statistics: how to calculate standard deviation with the Casio fx-991ES PLUS C Read more »
Tutoring probability, a better example than this might be hard to find. The tutor explains about the Las Vegas square in Careers® by Parker Brothers. I explain expected value in my post from August 16, 2013, showing by example that …
Lifestyle: games: why Las Vegas in Parker Brothers’ Careers® is a good deal. Read more »
Tutoring high school math, you might use the TI-83 Plus. The tutor shares his finding about an error message he recently saw. The other day, when trying to graph a function, the error message ERR: INVALID DIM appeared. From what …
Err: Invalid Dim on Ti-83 Plus: What causes it, and how can you get rid of it? Read more »
Tutoring math, geometric sequences are commonly encountered. You’ll find an introduction to geometric sequences in my post here. Example: Let’s imagine a geometric sequence with ratio r greater than one and start term M/r. It runs M/r, M, Mr…. Can …
Math: geometric sequences: increasing difference when r>1 Read more »