Exercises(4) 4.1 Select True or False for the following arguments : 1. (PA(p4))H9 2. (Pq)nq)P 3. (-p4)nq) 4. (p →q)^(-q) P
Percentage
A percentage is a number indicated as a fraction of 100. It is a dimensionless number often expressed using the symbol %.
Algebraic Expressions
In mathematics, an algebraic expression consists of constant(s), variable(s), and mathematical operators. It is made up of terms.
Numbers
Numbers are some measures used for counting. They can be compared one with another to know its position in the number line and determine which one is greater or lesser than the other.
Subtraction
Before we begin to understand the subtraction of algebraic expressions, we need to list out a few things that form the basis of algebra.
Addition
Before we begin to understand the addition of algebraic expressions, we need to list out a few things that form the basis of algebra.
![P(x )vq(x))
Exercises(4)
4.1 Select True or False for the following arguments :
1. (PA(p→9))9
2. ((P q)^q) p
3. (-p→9)^q)
4. (p →9)^(-9)P
5. (p 9)^(-p)
6. (-pr9)H→q →p
7. pa(p →9)^(q →r)Hr
8. Vx : p(x)→3x : p(x)
9. 3y Vx p(x,y) 3y p(x,y)
10. Vx Vy p(x.y)Vy Vx p(x.y),
11. Vx (p(x)^q(x ) (Vx p(xYAVx q(x ))
12. (Vx p(x)v Vx q(x)) →,p(x)vq(x))
4.2 Show that
رد. نوري فرحان المياحي- قسم الرييف
1. If x is an odd number, then x' is odd number.
2. If x is an odd number and y is an even number , then x +y is odd number.
3. If x and y are odd number, then x +y is even number.
4. x is an odd number iff x +1 is even number.
5.If x is råtional number and y s an irrational number , then x +y is an irrational number.
6. If x an even number, then x-x is even number.
7. If x is real number, then r|20
8. is an even number iff x is even number.
4.3 Show that the following statement where R is universal set
1. Ex :(x =x)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffa2c80ea-4c2b-4cc2-9ae6-32de3f5dbc31%2F069751c8-dd99-410b-a731-40759bad1832%2Fprkhf2_processed.jpeg&w=3840&q=75)
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