18. (Continued)
b. FG+(FG+H)
c. SR+(RT+RS)
d. (ST+Z)(AR)(RA)(Z+TS)
a. LM
19.
b. FG+H
c. SR+RT
d. (ST+Z)(AR)
Step by step
solutions on
LAW OF DOUBLE NEGATION: A = A
page A-2.
The diagram and truth table above represent the law of DOUBLE
NEGATION. Whenever two vincula of equal length extend over the
same variable or expression, both vincula may be removed by using
the DOUBLE NEGATIVE law. For example, A = A; CD = CD; A+B =
A+B; etc.
Simplify the following Boolean expressions, using the DOUBLE
NEGATIVE law.
a. X Y Z
c. (R+S) T
b. AB+X
d. L M T
1-13
IT 0344
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