That’s because it’s still plotting values – I set the “q” to 99 accidentally, when it only takes about 40 points to define this flower! Look really closely on the top right and you’ll see a tiny yellow circle adjacent to the battery. Very useful for identifying inflection points, for example.Įmboldened by this, I tried a more complex polar graph using a slightly more abstruse formula: I could also accomplish this with the function, but has the nice bonus of letting you use the arrows to step through values and see the x,y values along the line as you move. So I entered an equation:īy pushing the button along the top it was quickly and efficiently plotted: What it does really, really well is graph equations. This is way more powerful (and complicated) than that. Not quite as confusing as the RPN of HP calculators, but if you’re looking for a basic four-function calculator with some smarts, this is not your ‘droid. To start, I confirmed that you can add 1+1, but with its modern calculator design, the keystroke sequence is. You can see that even the up and down arrow keys have triple duty! It features 46 keys, just about all of which have three functions (standard, blue and green, as the blue and green keys denote), along with a lovely big color screen and even a cursor arrow cluster. You can also see that the calculator itself is, well, somewhat of a beast. It’s incredibly well ranked on Amazon (4 1/2 stars with almost 200 reviews) and Texas Instruments basically owns the graphing calculator market segment too, muchly with different versions of the TI-84 as technology has continued to improve.Įven better, for high school and college students, the TI-84 Plus CE is approved for use during the Scholastic Aptitude Test (SAT), Advanced Placement (AP) test and related, as highlighted on the package: So reviewing the TI-84 Plus CE was an interesting experience with only a few flashbacks to college math classes.įortunately, the TI-84 is a workhorse of a calculator, one of the most popular calculators on the market. I understand basic math, but once you get to polar graphing, matrices and rotating formula around an axis to compute volume, I’m way out of my league. First off a disclaimer that I’ve never had to write before: I’m not a mathematician, I don’t play one on TV and I did my best to avoid math classes in college and grad school too.
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