Sign+Code

In //java//**,** there are some signs that are used as simple codes that make it look simpler and allow us to do less typing.

code if(x == 0 || x ==1)   //This means if x equals to 0 or 1, x equals five. {                     //You cannot do if(x == 0 || 1), because it will cause an error. x = 5; } code code if(x > 0 && x < 10);  //This means if x is greater than 0 and less than 10, x equals five. {                     //You cannot do if(x > 0 && < 10), it will cause an error. x = 5; } code code private boolean isAlive = true; //Makes a boolean variable called isAlive which is set to true. ... isAlive = !isAlive; //Now isAlive is set to false because isAlive(true) equals to the //opposite of isAlive(false). //another way to think of this is !isAlive is the same as saying is-"Not"-Alive.
 * > **or (Usually used in if statement)**
 * EX.**
 * &&** > **and (usually used in if statement)**
 * EX.**
 * !** > **opposite**
 * EX.**

code code if(x < 0) //means if x is less than 0, x equals -1. {    x = -1; } code code if(x <= 0) //Instead of using < with line under it, in java, you use <=. {   x = -1; } code = **>** equal to (stored into) EX. code x = y; // x is equal to y (y is stored into x) code == > **if equal to (only used in if statements)** code if(x == 0) //If x is equal to 0, x is 0. {   x = 0; }
 * <** > **less than**
 * >** > **greater than**
 * EX.**
 * <= > less than or equal to**
 * >= > greater than or equal to**
 * EX.**
 * EX.**

code De Morgan's law has two forms: one for the negation of an and expression //and// one for the negation of an //or// expression. Example: !(a && b) is the same as !a || !b !(a || b) is the same as !a && !b

According to the above equalities, choose the correct answer to the following question.

What is the equiavalent to the following....... : ! (( x <= y) && (y > 5)) a. (x <= y) && (y > 5) b. (x <= y) || (y > 5) c. (x >= y) || (y < 5) d. (x > y) || (y <= 5) e. (x > y) && (y <= 5)

The ! distributes to the equations and the && so one can immediately eliminate answers A and E. !(x < = y) would change the equation to (x > y) so the only possible answer would then be D.