# Advanced math questions and answers

Recent questions in Advanced Math
robinmarian9nhn8 2022-04-12 Answered

### Predicate Logic and QuantifiersAssume that $\mathrm{\exists }x\phantom{\rule{thinmathspace}{0ex}}\mathrm{\forall }y\phantom{\rule{thinmathspace}{0ex}}P\left(x,y\right)$ is True and that domain of discourse is nonempty. If the statement is true, explain your answer; otherwise, give a counter example.From the question, we know that $\mathrm{\exists }x\phantom{\rule{thinmathspace}{0ex}}\mathrm{\forall }y\phantom{\rule{thinmathspace}{0ex}}P\left(x,y\right)$ means there is an x for which P(x,y) is true for every y.So the question wants me to prove $\mathrm{\forall }y\phantom{\rule{thinmathspace}{0ex}}\mathrm{\exists }x\phantom{\rule{thinmathspace}{0ex}}\mathrm{¬}P\left(x,y\right)$ that it is true, otherwise provide a counter example.How do i start to answer this question? Do i start by using rules of inferences to proof?

deformere692qr 2022-04-12 Answered

### Chromatic index of complete graph ${K}_{n}$ after removing one edge

measgachyx5q9 2022-04-12 Answered

### Let Q(x) be a quantifer for the universe ${\mathbb{Z}}^{+}$. I want to check whether $\left(\mathrm{\forall }y\left(Q\left(y\right)\vee \mathrm{\exists }xQ\left(x\right)\right)\right)\phantom{\rule{thickmathspace}{0ex}}⟺\phantom{\rule{thickmathspace}{0ex}}\mathrm{\exists }yQ\left(y\right)$.

lurtzslikgtgjd 2022-04-10 Answered

### Riordan numbers recurrenceLet be ${C}_{n}$ the ${n}^{th}$ Catalan's number. Well, I have the following relation:$f\left(n\right)=\sum _{k=0}^{n}\left(-1{\right)}^{n-k}\left(\genfrac{}{}{0}{}{n}{k}\right){C}_{k}\text{.}$I would like to know, if there is a way to obtain the recurrence:$f\left(n\right)=\frac{n-1}{n+1}\left(2f\left(n-1\right)+3f\left(n-2\right)\right)$ just by the first identity.

Frances Simon 2022-04-09 Answered

2022-04-04

Jane 2022-03-26

### A car travels at 108 kph from A to B for t seconds, applies the brakes for 4 seconds between B and C to give the car a constant deceleration and a speed of 72 kph at C, and finally travels at this speed from C to D, also for t seconds. If the total horizontal distance from A to D is 3100 m, determine the distance between A and B.

2022-03-25 Answered

2022-03-24

2022-03-18

2022-03-17

### At t=0 the current to a dc electric motor is reversed, resulting in an angular displacement of the motor shaft given by 𝜃(𝑡) = (250 𝑟𝑎𝑑/𝑠 )𝑡 − (20.0 𝑟𝑎𝑑/𝑠 2 )𝑡 2 − (1.50 𝑟𝑎𝑑/𝑠 3 ) 𝑡 3 . (a) At what time is the angular velocity of the motor shaft zero? (b) Calculate the angular acceleration at the instant that the motor shaft has zero angular velocity. (c) How many revolutions does the motor shaft turn through between the time when the current is reversed and the instant when the angular velocity is zero? (d) How fast was the motor shaft rotating at t=0 when the current was reversed? (e) Calculate the average angular velocity for the time period from t=0 to the time calculated in part (a). A

Sam Johnston 2022-03-17
2022-03-17
2022-03-11 Answered

### Does the Diophantine Equation378x + 222y = 8

2022-03-09 Answered

### find the length of the curve(r=2+4*cos(t))

2022-03-07 Answered

### )Graph the function y = x^2− 2x + 3, not by plotting points, but by starting with the graph of y = x^2 and then applying the appropriate transformations. Describe your transformations

2022-02-23 Answered

### For the first five questions, you can answer Below Average, Average, Above Average for each question. The last three questions, you can respond with either Agree or Disagree. How many total outcomes are there for this survey?

2022-02-11 Answered

### xy'ln(y/x)=x+yln(y/x)find general solution of the homogenous equation

2022-02-09 Answered

### implicit differentiation1.if y^2=× 2.if ×^2+3×y+2y^2=3,find dy/dx at point (-1,2)

Students pursuing advanced Math are constantly dealing with advanced Math equations that are mostly used in space engineering, programming, and construction of AI-based solutions that we can see daily as we are turning to automation that helps us to find the answers to our challenges. If it sounds overly complex with subjects like exponential growth and decay, don’t let advanced math problems frighten you because these must be approached through the lens of advanced Math questions and answers. Regardless if you are dealing with simple equations or more complex ones, just break things down into several chunks as it will help you to find the answers.