HP 48G - Frequently Asked Questions

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FREQUENTLY ASKED QUESTIONS
: Why | am getting an error message?
: Check the argument types and order for the com-
mand you're trying to use (see pp. 41-77).
: How do | adjust the display to be easier to read?
: Use [ON-+) or (ON}(=) (see p. 39).
: How do | change the format or number of decimal
places displayed by the calculator?
: Use (qmoDes) M (see pp. 11 and 41-77).
: What does anE in a number mean?
: It's scientific notation (e.g. b. BZEZ3 = 6.02x10%).
: Why am | getting wrong results with trig functions?
: Check the angle mode (see on p. 11).
For example, if you see the annunciator FAD or
GFRAD, the machine is not using degrees.
: Why don'’t getd when | use+NUM on 'SINC) ' 2
: If you want the numerical identity that comes from
the symbolic constant T, don’t use *MUIM (rather,
use EVAL, with flag -2 clear). *NLUM does its cal-
culation on a 12-digit numerical approximation of
n, which is 3. 141539265359, (No machine can
use the actual numerical value of =—it has an in-
finite number of digits). Andsin3.14159265359#0.
For similar reasons, doesn’treturn .
: Why can'’t | find the variable(s) | stored?
: You're probably in a different directory now than
when you stored the variable(s). See pp. 6-9.
: Why am I getting anldndet ined Hame error
when using +MUM orEVAL 2
: Atleastone name inthe given expressionis unde-
fined in the current path. +MUIM always demands
a numerical result; EYAL demands it whenever
flag -3 is set (see pp. 6-9 and 78).
: Why doesn’tEVAL give me a number?
: EVAL demands a numerical result only when flag
-3is set. Otherwise, names are not evaluated (ex-
cept symbolic constants, which reduce to numeri-
calvaluesif flag -2 is set). So if you definitely want
a number, use *MUM. (See also pp. 7 and 78.)
: My calculatoris “locking” up or behaving strangely.
How can | check and/or correct this?
: Tryrestart procedures or system tests (see p. 39).
THe HP 48G/GX Pocker GuIDE