|a very stylish and competent scientific model similar
in design to the fx-3800p.
this model is not
programmable, but offers more in terms of scientific functions than
others in this series. it is algebraic entry, rather than formula like
the fx-4000p and
fx-5000f and has a dot matrix display useful for the advanced
along with the usual scientific function here are fractions, 2d
statistics with linear regression, number bases, complex numbers,
physics units and magnitudes and the gamma function.
these are done fairly well. in complex mode, there are buttons for
i, arg(z), cong(z) and |z| which are all handy.
the longer dot matrix display is better for complex numbers since you
can see the start of any complex part in the answer (eg
1.098684113+0...) to see more, there is a scroll left and right
button. the complex number coverage is fair but not complete; you have
sqrt, 1/x, x2,
xy, cube root, as well as the usual
arithmetic. none of the scientific operations work with complex numbers
and return an error. still more than the fx-5500l
but nowhere as capable as the hp15c.
here are the usual 2d stats offering from casio. using the kout
memories to return the partial sums, there is also linear regression and
physics units and magnitudes
this must have seemed like a good idea but it doesn't really add much
in way of true usefulness. in any mode you can use the magnitudes k,
M, G, T, P & E which are shorthand for 10^3 thru
10^18 and the corresponding m, u, n, p, f & a which
represent 10^-3 thu 10^-18. the units are also the symbols
W, C, F, A, Ω, S & V. the latter are only available
in units mode and correspond to the physical dimensions, watts,
coulombs, farads, amps, ohms, seconds and volts. for example 2A*3V =
6W, so it knows simple relationships between them. this would have
been much more useful if a more compete set of units were present, for
example where is length or force? nevertheless this might be of use
occasionally, although i would gladly swap this feature for built in
physical constants like the fx-570
these are the usual casio offering with a 32 bit hex wordsize and
bases decimal, hex, octal and binary on offer. in bases mode, there are
dedicated keys for a-f and also several binary operations; not, and,
or, xor, xnor and neg (wot no nand?). these all work
well. the binary wordsize is 12 bits (signed) so it is more limited than
the other modes and wont scroll.
a bit of a surprise to find the gamma function, Γ, on a key of its
own. there it is. for example, Γ(70.9) = 7.827382824e99. apart from the
advanced hps (eg hp15c,
hp48g), its rare to have this on a non-programmable. for instance
the quirky commodore sr-9190 has ln(gamma(x)).