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12: The Equation Solver 175
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
Examples of Conditional Equations.
=
Means: If A is greater than 7 and is less than or equal to 15, then
B＝ 2 x A ÷ 6＋C. Otherwise, B＝3 x A＋10＋C.
Means: If
FIRST is not equal to 0, then
VALUE＝FIRST＋1 ÷ FIRST. If FIRST＝0, then VALUE＝FIRST.
Means: If
A or B, but not both, equals 0, then T＝W x (A + B).
Otherwise,
T = W x A x B. In other words,
When
A＝0 and B≠0, T＝W x B.
When
A≠0 and B＝0, T＝W x A
When
A＝0 and B＝0, T＝0.
When
A≠0 and B≠0, T＝W x A x B.
Example: Nested IF Functions. An IF function can be used as the
argument of another IF function. This is called
nesting. Suppose a
corporation uses a rating system to determine salary. Employees are
rated on a scale from 1 through 3, and are given the following annual
percent raise based on their rating:
Rating Percent Salary Increase
1
2
3
3%
6%
10%
The Solver equation to calculate an employee’s new salary is based on
his or her rating and old salary. What would be the new annual salary
for an employee with a rating of 2 who currently earns $27,500
annually?