HP 49g+, Руководство пользователя, Страница: 127 / 862

Page 3-5
Squares and square roots
The square function, SQ, is available through the keystroke combination:
„º
. When calculating in the stack in ALG mode, enter the function
before the argument, e.g.,
„º\2.3`
In RPN mode, enter the number first, then the function, e.g.,
2.3\„º
The square root function,
√
, is available through the R key. When calculating
in the stack in ALG mode, enter the function before the argument, e.g.,
R123.4`
In RPN mode, enter the number first, then the function, e.g.,
123.4R
Powers and roots
The power function, ^, is available through the
Q
key. When calculating
in the stack in ALG mode, enter the base ( y ) followed by the
Q
key, and
then the exponent ( x ), e.g.,
5.2Q1.25
In RPN mode, enter the number first, then the function, e.g.,
5.2`1.25`Q
The root function, XROOT (y,x), is available through the keystroke combination
‚»
. When calculating in the stack in ALG mode, enter the function
XROOT followed by the arguments ( y,x ), separated by commas, e.g.,
‚»3‚í 27`
In RPN mode, enter the argument y , first, then, x , and finally the function call,
e.g.,
27`3`‚»
Base-10 logarithms and powers of 10
Logarithms of base 10 are calculated by the keystroke combination
‚Ã
(function LOG) while its inverse function (ALOG, or antilogarithm) is calculated
by using
„Â
. In ALG mode, the function is entered before the argument:
‚Ã2.45`
„Â\2.3`
In RPN mode, the argument is entered before the function
2.45` ‚Ã
2.3\` „Â