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Q. How do I indicate multiplication in an equation?
A. You must use the multiplication sign ([x]). You cannot use implied
multiplication—for example, AB for AXB.
Q. What does the colon in the display mean?
A. It separates the two numbers entered as n; [INPUT] 11, in statistics or
two-argument functions.
Q. My numbers contain commas instead of periods as decimal points.
How do I restore the periods?
A. Changing the decimal point is covered in "Interchanging the Pe-
riod and Comma" on page 25.
Q. What does an "E" in a number (for example, 2.51E-13) mean?
A. The number is displayed in scientific or engineering notation (see
page 23).
Q. The calculator has displayed the message MEMORY FULL. What
should I do?
A. You must clear a portion of memory before proceeding (see "Clear-
ing Portions of Memory" on page 28).
Q. How can I change the sign of a number?
A. Press [F4].
Q. Why does calculating the sine of w radians display a very small
number instead of 0?
A. 7 cannot be represented exactly with the 12-digit precision of the
calculator.The calculated answer is correct for the 12-digit approxima-
tion of .
Q. Why do I get incorrect answers when I use the trigonometric
functions?
A. You must make sure you are in the correct angular mode (see page
45.)
A: Assistance, Batteries, Memory, and Service
141
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