What is the difference between the symbols →, ⇒ and |= in logic?
How exactly are these symbols used? As far as I currently understand, they all have the same meaning. So how do the statements A⇒B, A |=B and A→B differ?
Complete induction 2?
Complete induction, Hello, I've been revisiting the principle of complete induction and have encountered the following logical error: At the beginning, there's a statement that you prove by plugging in a number. This means that from that moment on, you say that equation XY holds for a certain variable (natural number). Let's say the assumption…
Learn power laws?
Uhhh I'm sick and I've just got to the point where I understand it and it's easy to find from my homework, but how do you calculate: a²xbxa³xb or: a²×b×a³×b when the exponent and base are different.
What does weak convexity mean?
I don't fully understand weak convexity. As far as I know, weak convexity means that mixtures are no worse. The example I have is: A > B And C > B in the solution weak convexity assumption violated, but why?
Probability "or"?
If I have to calculate the probability of one event or the probability of another event and both are in one problem or sentence, is the result the union of the two solutions?
How to complete a task without trial and error?
I'm not entirely sure how to get the points for 12 b) and 13 a) without fiddling with r and s until you find two possible parameters. Is 2 correct for 13 a)?
Vectors in space?
For number 21, I have a) true, b) false, c) true, and d) false, since it's 0A. Is that correct? In 22 a) a rectangle and in b) a square? Thank you in advance for your answers!
How can you prove this?
How did they prove this theorem? That is, that the power set is always 2^n. What exactly did they do there? As background, I understand this long process with indecision shifting, etc.
I need help with math please?
the task is: for the events a and b P(A) , P (B) and P(A∩B) are known a) Using a four-field table, explain how to determine P(A∪B) b) Use this formula to determine the probability of rolling at least a six when rolling the dice twice
Specify the ratio correctly?
Hello, I have two intersecting lines. I need to determine the ratio of the SP to the line g between A and B. The length of AB is 3 root 10, and the length of A to SP is also 3 root 10. The ratio is therefore 100:0, right? Or 1:0😭
Which of the formula columns shown in the image do I need?
Hello I have k=6 balls that need to be distributed across n=3 compartments. Which of the formula columns shown in the image do I need?
What does the normal vector N(0I0I0) mean?
The normal vector of the following vectors is N(0I0I0): B(2I1I-3); A(-4I-2I6) What could that mean? Is that even possible? I thought it could be that the direction vectors are multiples of each other, and perhaps lie on top of each other (perhaps even identical?), and therefore no normal vector is created. What would you say…