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2 years ago

Write a program that outputs "Hello World!".

1 answer:

4 0

Print(“Hello World!”)

I hope this helps :) I’m sry is this what you wanted or were you looking for something else because I’m willing to help either way.

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: Show that the propositions (p ∨ q) ∧ (¬p ∨ r) and (p ∧ r) ⊕ (¬p ∧ q) are logically equivalent.

Ipatiy [6.2K]

Answer:

$(p\vee q)\wedge(\neg p\vee r)\equiv(p\wedge r)\vee(\neg p\wedge q)$

Explanation:

The statements are logically equivalent if they have the same truth tables. So let´s use truth tables in order to determine if they are logically equivalent or not:

The picture that I attached you shows the truth table for each case. As you can see in the highlight columns:

$(p\vee q)\wedge(\neg p\vee r)\equiv(p\wedge r)\vee(\neg p\wedge q)$

They are logically equivalent because they have exactly the same truth values between each other. Hence, we can conclude that they are logically equivalent.

3 0

3 years ago

Select the correct answer from the drop-down menu. Olivia composed a layout with the image below for a seasonal greeting card. W

amid [387]

Answer:

repetition

Explanation:

the umbrellas are repeated

6 0

2 years ago

Write a Java method to delete a record from a B-tree of order n.

max2010maxim [7]

Answer:

Deleting a record on a B-tree consists of three main events:

- Searching the node where the key to be deleted exists

- Deleting the key

- Balancing the tree if required

Explanation:

q = NULL;

p = tree;

while (p) {

i = nodesearch(p, key);

q = p;

if (i < used(p) -1 && key == k(p,i)) {

found = TRUE;

position = i;

break;

}

p = son(p,i);

}

if (!found)

else if (subtree(p)) {

if (used(p) > ((n-1)/2)+1)

delkey (p, position, key);

else {

replace (p, position, fsucc(p));

p0 r1 p1 r2 p2 r3 ……. pn-1 rn-1 pn

q = &fsucc(p);

qpos = index of fsucc;

if (used(rbrother(p)) > ((n-1)/2)+1)

replace (q, qpos, sonsucc(q));

else

while (q && used(q) < (n-1)/2) {

concatenate(q, brother(q));

q = father(q);

}

else

delkey(p, position, key);

}

6 0

3 years ago

Brian drives a car that uses voice commands for navigation. Which field did researchers use to develop a car-based AI that under

pickupchik [31]

Answer:

A, Computer Engineering

4 0

3 years ago

Why linked list is better than an array?

katrin [286]

In conclusion there are many different data structures. Each data structure has strengths and weaknesses which affect performance depending on the task. Today, we explored two data structures: arrays and linked lists. Arrays allow random access and require less memory per element (do not need space for pointers) while lacking efficiency for insertion/deletion operations and memory allocation. On the contrary, linked lists are dynamic and have faster insertion/deletion time complexities. However, linked list have a slower search time and pointers require additional memory per element in the list. Figure 10 below summarizes the strength and weakness of arrays and linked lists.

8 0

2 years ago