HP 33S User Manual page 5

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HP 33S Solving for roots
In RPN or algebraic mode: 10zeXÛX
Answer: Roots found for the equation are +3 and +4. Note that the HP 33S owners manual provides much more
information about providing initial guesses for the SOLVE feature.
Example 3: Solve for the roots of 4X
Solution: First, rearrange the equation so that the variable Y is isolated. This is necessary to use the SOLVE function
as we are doing in this training aid. The rearranged equation is Y = 4X
We're looking for values of X such that 4X
value of the function. If a program already exists in program memory with the name of X, then it will need to
be cleared. This can be done by pressing ¹uÕÏ to have the HP 33S display the list of
programs in the calculator and then press Ø to step through the program labels. When the label of the
program to be deleted is shown in the display, pressing ¹¡will delete that program from the
calculator's memory. Pressing Å will then clear the display and allow you to proceed.
In RPN or algebraic mode: ¹£¹ÓXºd
To show the checksum and length of this program, press the following in RPN or algebraic mode. Note that
the symbol Õ means to press the right arrow direction of the cursor key at the top of the HP 33S. If you
are unsure of its location, see the image at the end of this training aid.
In RPN or algebraic mode: ¹uÕϺÎ
If the checksum of the program just entered does not equal 8DF1, then you have not entered it correctly.
To clear the checksum display press:
In RPN or algebraic mode: ¹£
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– 2X – Y = 12
2
– 2X – 12 = 0. First, we'll enter a program that computes the
2
4¸hX)2Ã2¸hXÃ12Ï
ºÔ
- 5 -
Figure 9
– 2X – 12.
2
Figure 10
Figure 11
HP 33S Solving for roots - Version 1.0