Table of Contents
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Mathematics and
Mathematics and
Mathematics and
Mathematics and
Number
Number
Number- - - - Alteration Functions
Number
hp 12c
The
provides several keys for mathematical functions and for altering,
numbers. These functions are useful for specialized financial calculations as well as
for general mathematics calculations.
One- - - - Number Functions
One
One
One
Number Functions
Number Functions
Number Functions
Most of the mathematics functions require that only one number be in the
calculator (that is, the number in the display) before the function key is pressed.
Pressing the function key then replaces the number in the display by the result.
Reciprocal. Pressing y calculates the reciprocal of the number in the display —
Reciprocal.
Reciprocal.
Reciprocal.
that is, it divides 1 by the number in the display.
Square Root. Pressing gr calculates the square root of the number in the
Square Root.
Square Root.
Square Root.
display.
Logarithm. Pressing g¿ calculates the natural logarithm (that is, the logarithm
Logarithm.
Logarithm.
Logarithm.
e
to the base
) of the number in the display. To calculate the common logarithm
(that is, the logarithm to the base 10) of the number in the display, calculate the
natural logarithm, then press 10g¿z.
Exponential. Pressing g> calculates the exponential of the number in the
Exponential.
Exponential.
Exponential.
display — that is, it raises the base
Factorial. Pressing ge calculates the factorial of the number in the display —
Factorial.
Factorial.
Factorial.
that is, it calculates the product of the integers from 1 to
in the display.
Round. The display format specifies to how many decimal places a number inside
Round.
Round.
Round.
the calculator is rounded when it appears in the display; but the display format
alone does not affect the number itself inside the calculator. Pressing fB,
however, changes the number inside the calculator to match its displayed version.
Thus, to round a number in the display to a given number of decimal places,
temporarily set the display format (as described on page 71) to show the desired
number of decimal places, then press fB.
Integer. . . . Pressing gÑ replaces the number in the display by its integer
Integer
Integer
Integer
portion — that is, it replaces each digit to the right of the decimal point by 0. The
number is changed inside the calculator as well as in the display. The original
number can be recalled to the display by pressing gF.
Section 7
Alteration Functions
Alteration Functions
Alteration Functions
e
to the number in the display.
83
83
83
83
n
n
, where
is the number
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