Tutoring Center 972-860-2974
Room C209
F. Exponential and Logarithmic Keys
1.
(reciprocal) will take the reciprocal of the expression. You can also take
the reciprocal of a value that has already been calculated by pressing
after
an expression has been calculated and then ENTER.
2.
(squaring key) will square a number or expression.
3.
(square root) will take the square root of a nonnegative number or
expression. If the expression is negative you will get an error message like the one
shown below in the screen on the right.
(Common log - base 10) takes the logarithm base 10 of any positive
4.
number. If you enter a negative expression or zero, an error message will be
displayed as shown in the figure on the right below.
5.
(10 raised to a power) is a key you can use to raise 10 to a power. Press
and then the exponent.
6.
(natural exponent) will raise the natural exponent e to any real power. If you
.
want to just enter the value of e, press
7.
(natural logarithm) will calculate the natural log (log base e) of any
nonnegative expression. If a negative value or a zero is entered you will get an
error message like the one shown below on the right.
Updated 2-16-09