2012年10月4日 · The HP 15C is less than $100, and it was THE killer scientific calculator for engineers and chemists back in the '80s. Fits in a shirt pocket and does everything its larger …

2010年2月18日 · HP has a 15c emulator for the iPhone. It is either $29 or $39, but that is way cheaper than what they go for on ebay. I'd buy more than one 15c, 32sII or 42S if they were …

2025年1月14日 · This is a simple question, but after 30 minutes on Google, no sensible results. I want to solve this equation: 1/(2.04Sin(29.36 + 0)) on a regular basis. My idea was to have …

2007年2月24日 · RPN rules. When you have become familiar with that notation, you will zip through calculations that used to seem tedious. I got my first HP back in '76 or so, when I went …

2006年9月23日 · I remember not being able to financially justify trading up to an HP 15C, since my 29C did everything I needed, but I really liked the 15C. It's financial cousin, the HP 12C is …

2012年5月12日 · I'm trying to calculate the cube root of -8, for example, so I type in these buttons: 8 CHS (change sign) Enter 3 1/x y^x But it gives me an...

2012年9月26日 · I thought of the TI-89 Titanium. But then I remembered that HP had a good line of calculators - at least they did. I do not think they have maintained their quality quite so well …

2015年4月11日 · The Hp Prime copied this philosophy as well as built their Prime upon the earlier Hp 49/40G platform. This makes it a somewhat less powerful number crunching tool than the …

2015年3月15日 · Assuming my car weighs 4000 pounds with passengers and cargo and is traveling at 100 feet per second, this requires 4000lb*100ft/s = 400,000 ft-lb/s or 727.3 hp of …

2012年2月11日 · Frustrations with HP Laptop: Unopenable and Slow. Nov 14, 2018; Replies 29 Views 4K.