How does this stack up against the Casio FX 115ES Plus?

The Casio fx-115ES Plus is a slightly faster numerical integrator than the TI-36X Pro. On the other hand, the more recent Casio fx-991EX (the upgrade to the 115ES Plus) is MUCH FASTER (about 5x) with numerical integration than is the TI-36X Pro. The TI-36X Pro is a slow-poke with moderately complicated numerical integrations.

Can this calculator do log -3.43? If so, how? Normally calculators will have 10^x.

No, it gives a "DOMAIN error" when taking the log of a negative number, even if complex numbers are enabled. Like most cheap scientific calculators, its complex number support is very limited! (LOG(-3.43) is actually approx 0.5355+1.3644i.)

ASIN	B004NBZB2Y
Best Sellers Rank	#1,976 in Office Products ( See Top 100 in Office Products ) #5 in Scientific Calculators
Brand	Texas Instruments
Calculator Type	Engineering/Scientific
Color	Black
Compatible Devices	TI 36X Pro
Customer Reviews	4.8 out of 5 stars 22,711 Reviews
Display Type	LED
Enclosure Material	Plastic
Global Trade Identification Number	00033317029860, 03243480103572, 03243480104739
Item Dimensions L x W	7.22"L x 3.27"W
Item Weight	5.28 ounces
Manufacturer	Texas Instruments
Mfr Part Number	36PRO/TBL/1L1
Model Name	TI-30X
Model Number	36PRO/TBL/1L1
Number of Batteries	1 Lithium Metal batteries required. (included)
Power Source	Battery Powered
Screen Size	3
UPC	197274678803 012303264850 527645823516 763615999007 778888085951 999997114824 791583761272 033317203666 734911329478 666672977165 640206706346 803982780126 806293526162 033317070251 872182668381 080175314317 033317029860 641438187811 523160308910 809302183899 999997491543 172302617702 012951710266 168141372360 067224971325 809385664070 702658636043 801593400624 638458801209 809186269108 1631207457…
Unit Count	1.0 Count
Warranty Description	Contact Manufacturer

Texas Instruments TI-36X Pro Engineering/Scientific Calculator | 9.7 Inch | Black.

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