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13-26 Simple Programming
Polynomial Expressions and Horner's Method
Some expressions, such as polynomials, use the same variable several times for their
solution. For example, the expression
Ax
4
+ Bx
3
+ Cx
2
+ Dx + E
uses the variable x four different times. A program to calculate such an expression
using RPN operations could repeatedly recall a stored copy of x from a variable.
Example:
Write a program using RPN operations for 5x
4
+ 2x
3
, then evaluate it for x = 7.